For other cycling related terms (besides parts) see

Glossary of cycling This is a glossary of terms and jargon used in cycling, mountain biking, and cycle sport. For ''parts of a bicycle'', see List of bicycle parts. 0–9 ; 27.5 Mountain bike: A mountain bike with wheels that are approximately in diameter and ...

. List of

bicycle A bicycle, also called a pedal cycle, bike or cycle, is a human-powered or motor-powered assisted, pedal-driven, single-track vehicle, having two wheels attached to a frame, one behind the other. A is called a cyclist, or bicyclist. Bic ...

parts by alphabetic order: *

Axle An axle or axletree is a central shaft for a rotating wheel or gear. On wheeled vehicles, the axle may be fixed to the wheels, rotating with them, or fixed to the vehicle, with the wheels rotating around the axle. In the former case, bearing ...

: as in the generic definition, a rod that serves to attach a wheel to a bicycle and provides support for bearings on which the wheel rotates. Also sometimes used to describe suspension components, for example a swing arm pivot axle * Bar ends: extensions at the end of straight handlebars to allow for multiple hand positions * Bar plugs or end caps: plugs for the ends of handlebars *

Basket A basket is a container that is traditionally constructed from stiff fibers and can be made from a range of materials, including wood splints, runners, and cane. While most baskets are made from plant materials, other materials such as horsehai ...

: cargo carrier * Bearing: a device that facilitates rotation by reducing friction *

Bell A bell is a directly struck idiophone percussion instrument. Most bells have the shape of a hollow cup that when struck vibrates in a single strong strike tone, with its sides forming an efficient resonator. The strike may be made by an inter ...

: an audible device for warning pedestrians and other cyclists * Belt-drive: alternative to chain-drive * Bicycle brake cable: see Cable *

Bottle cage A bottle cage is device used to affix a water bottle to a bicycle. Composed of plastic, aluminum, stainless steel, titanium or carbon fiber, it is attached to the main frame of a bicycle, the handlebars, behind the saddle, or, in uncommon cas ...

: a holder for a water bottle *

Bottom bracket The bottom bracket on a bicycle connects the crankset (chainset) to the bicycle and allows the crankset to rotate freely. It contains a spindle to which the crankset attaches, and the bearings that allow the spindle and crankset to rotate. The ch ...

: The bearing system that the pedals (and cranks) rotate around. Contains a spindle to which the crankset is attached and the bearings themselves. There is a bearing surface on the spindle, and on each of the cups that thread into the frame. The bottom bracket may be overhaulable (an adjustable bottom bracket) or not overhaulable (a cartridge bottom bracket). The bottom bracket fits inside the bottom bracket shell, which is part of the bicycle frame *

Brake A brake is a mechanical device that inhibits motion by absorbing energy from a moving system. It is used for slowing or stopping a moving vehicle, wheel, axle, or to prevent its motion, most often accomplished by means of friction. Background ...

: devices used to stop or slow down a bicycle. Rim brakes and disc brakes are operated by brake levers, which are mounted on the handlebars. Band brake is an alternative to rim brakes but can only be installed at the rear wheel. Coaster brakes are operated by pedaling backward * Brake lever: a lever for actuating a bicycle brake * Brake shifter or colloquially, brifter (see also

Shimano Total Integration Shimano Total Integration (STI) is a gearshift system designed by Shimano for racing bicycles. It combines the braking and gear shifting controls into the same component. This allows shifting gears without having to remove a hand from the bars, un ...

Campagnolo ErgoPower Campagnolo ErgoPower is an integrated gearshift and brake lever system designed by Campagnolo for racing bicycles. It allows shifting gears without having to remove a hand from the bars, unlike previous down tube shifting systems. It was launche ...

and SRAM Double Tap): combined shifter and brake lever control *

Braze-on A braze-on is the name for any number of parts of a bicycle that have been permanently attached to the frame. The term "braze-on" comes from when these parts would have been brazed on to steel frame bicycles. Braze-ons continue to be so-called ev ...

: a fitting protruding from a frame to provide attachment, typically for cable housings or tire pumps and similar accessories *

Cable guide A cable guide is a fitting or part of a bicycle frame which guides a piece of bare inner bowden cable around a corner. Most multi-speed bicycles have cable guides to get the derailleur cables past the bottom bracket The bottom bracket on a bicyc ...

: a fitting below the bottom bracket which guides a piece of bare inner

bowden cable A Bowden cable ( ) is a type of flexible cable used to transmit mechanical force or energy by the movement of an inner cable relative to a hollow outer cable housing. The housing is generally of composite construction, consisting of an inne ...

around a corner *

Cable Cable may refer to: Mechanical * Nautical cable, an assembly of three or more ropes woven against the weave of the ropes, rendering it virtually waterproof * Wire rope, a type of rope that consists of several strands of metal wire laid into a hel ...

: a metal cable enclosed in part by a metal and plastic housing that is used to connect a control, such as a brake or shifting lever, to the device it activates *

Cartridge bearing The bottom bracket on a bicycle connects the crankset (chainset) to the bicycle and allows the crankset to rotate freely. It contains a spindle (tool), spindle to which the crankset attaches, and the bearing (mechanical), bearings that allow the s ...

: a type of bearing that is not user-serviceable, but must be replaced as a unit *

Cassette Cassette may refer to: Technology * Cassette tape (or ''musicassette'', ''audio cassette'', ''cassette tape'', or ''tape''), a worldwide standard for analog audio recording and playback ** Cassette single (or "Cassingle"), a music single in th ...

: a group of stacked sprockets on the rear wheel of a bicycle with a rear derailleur *

Coaster brake A bicycle brake reduces the speed of a bicycle or prevents it from moving. The three main types are: rim brakes, disc brakes, and drum brakes. Most bicycle brake systems consist of three main components: a mechanism for the rider to apply the b ...

or backpedal brake *

Chain A chain is a serial assembly of connected pieces, called links, typically made of metal, with an overall character similar to that of a rope in that it is flexible and curved in compression but linear, rigid, and load-bearing in tension. A c ...

: a system of interlinking pins, plates and rollers that transmits power from the front sprocket(s) to the rear sprocket(s) *

Chainguard A gear case, also known as a chain case or chainguard, is an enclosure for the bicycle chain and sprocket assemblages commonly employed by utility bicycles. It serves to protect the cyclist from being soiled or trapped in the Crankset#chain ring, ...

Gear case A gear case, also known as a chain case or chainguard, is an enclosure for the bicycle chain and sprocket assemblages commonly employed by utility bicycles. It serves to protect the cyclist from being soiled or trapped in the chain rings and ten ...

cover for the entire chain either totally encasing (sometimes containing

oil An oil is any nonpolar chemical substance that is composed primarily of hydrocarbons and is hydrophobic (does not mix with water) & lipophilic (mixes with other oils). Oils are usually flammable and surface active. Most oils are unsaturated ...

) or 'incomplete'. Either way, designed to keep clothing from fouling the chain. See also Skirtguard,

Bashguard A bashguard is a device used on bicycles to protect components, usually the drivetrain, from damage in the case of a strike with an object, whether intentional or in a crash. There are two types, bashrings and bashplates. Bashring In cycling, b ...

. *

Chainring The crankset (in the US) or chainset (in the UK), is the component of a bicycle drivetrain that converts the reciprocating motion of the rider's legs into rotational motion used to drive the chain or belt, which in turn drives the rear whee ...

: (one of the) front gear(s), attached to a crank *

Chainset The crankset (in the US) or chainset (in the UK), is the component of a bicycle drivetrain that converts the reciprocating motion of the rider's legs into rotational motion used to drive the chain or belt, which in turn drives the rear whe ...

: see Crankset *

Chainstay A bicycle frame is the main component of a bicycle, onto which wheels and other components are fitted. The modern and most common frame design for an upright bicycle is based on the safety bicycle, and consists of two triangles: a main triangle ...

: a pair of tubes on a bicycle frame that runs from the bottom bracket to the rear fork ends * Chain tensioner: a device to maintain proper chain tension * Chaintug: a device to aid in setting the proper chain tension * Cluster: a bicycle

cogset On a bicycle, the cassette or cluster is the set of multiple sprockets that attaches to the hub on the rear wheel. A cogset works with a rear derailleur to provide multiple gear ratios to the rider. Cassettes come in two varieties, freewheels ...

, either a freewheel, or cassette *

Cogset On a bicycle, the cassette or cluster is the set of multiple sprockets that attaches to the hub on the rear wheel. A cogset works with a rear derailleur to provide multiple gear ratios to the rider. Cassettes come in two varieties, freewheels ...

: the set of rear sprockets that attaches to the hub on the rear wheel *

Cone A cone is a three-dimensional geometric shape that tapers smoothly from a flat base (frequently, though not necessarily, circular) to a point called the apex or vertex. A cone is formed by a set of line segments, half-lines, or lines con ...

: holds bearings in place, pressed against the cup * Cotter: pin for attaching cottered cranks * Coupler: to connect tubing together *

Crankset The crankset (in the US) or chainset (in the UK), is the component of a bicycle drivetrain that converts the reciprocating motion of the rider's legs into rotational motion used to drive the chain or belt, which in turn drives the rear wheel ...

or chainset: composed of cranks and at least one chainring *

Cup A cup is an open-top used to hold hot or cold liquids for pouring or drinking; while mainly used for drinking, it also can be used to store solids for pouring (e.g., sugar, flour, grains, salt). Cups may be made of glass, metal, china, clay, ...

: receives ball bearings which roll along its inner surface; integrated on most conventional hubs or can be pressed into older bottom bracket shells. See also Cone *

Cyclocomputer A cyclocomputer, cycle computer, cycling computer or cyclometer is a device mounted on a bicycle that calculates and displays trip information, similar to the instruments in the dashboard of a car. The computer with display, or ''head unit'', ...

: an electronic accessory that measures and displays instantaneous and cumulative speed and distance. Often provides other measurements such as heart rate *

Derailleur hanger A fork end, fork-end, or forkend is a slot in a bicycle frame or bicycle fork where the axle of a bicycle wheel is attached. A dropout is a type of fork end that allows the rear wheel to be removed without first derailing the chain. Track bicycl ...

: a piece on the rear dropout that the derailleur attaches to. *

Derailleur Shimano 600 front derailleur (1980) A derailleur is a variable-ratio bicycle gearing system consisting of a chain, multiple sprockets of different sizes, and a mechanism to move the chain from one sprocket to another. Modern front and rear d ...

: an assembly of levers, usually cable actuated, that moves the chain between sprockets on a cassette or chainring assembly *

Down tube A bicycle frame is the main component of a bicycle, onto which wheels and other components are fitted. The modern and most common frame design for an upright bicycle is based on the safety bicycle, and consists of two triangles: a main triangl ...

: tube on the bicycle frame that runs from the head tube to the bottom bracket * Dropout: a bicycle rear fork end that allows the rear wheel to be removed without first derailing the chain. The term ''dropout'' is often incorrectly used to refer to any ''fork end'', but not all fork ends are dropouts * Dustcap: any cap serving to keep dirt and contamination out of an assembly. Common over crank bolts, often plastic *

Dynamo file:DynamoElectricMachinesEndViewPartlySection USP284110.png, "Dynamo Electric Machine" (end view, partly section, ) A dynamo is an electrical generator that creates direct current using a commutator (electric), commutator. Dynamos were the f ...

: bicycle lighting component, also known as generator *

Eyelet Curtain grommets, used among others in shower curtains. A grommet is a ring or edge strip inserted into a hole through thin material, typically a sheet of textile fabric, sheet metal or composite of carbon fiber, wood or honeycomb. Grommets ar ...

: :1) attachment point on frame, fork, or dropout for fenders, racks, etc. :2) a hole through which a

spoke nipple A spoke nipple holds a bicycle wheel's rim to each spoke. The spoke nipple is a headed cylinder with threading on the inside through part of its length (there is an unthreaded lead-in nearest the "flats"). Traditionally, the nipples fit in hol ...

passes through the rim so it may attach to a spoke *

Electronic Gear-Shifting System upElectronic front derailleur (Shimano Di2) An electronic gear-shifting system is a method of changing gears on a bicycle, which enables riders to shift with electronic switches instead of using conventional control levers and mechanical cables. ...

: not simply a type of shifter or a type of derailleur, a complete system with switches instead of levers, wires instead of Bowden cables, and motor-driven derailleurs that must all work together * Fairing: a full or partial covering for a bicycle to reduce aerodynamic drag or to protect the rider from the elements * Fender or mudguard: curved pieces of metal or plastic above the tires which catch and redirect road spray thrown up by the tires, allowing the rider to remain relatively clean. May come in pairs *

Ferrule A ferrule (a corruption of Latin ' "small bracelet", under the influence of ' "iron") is any of a number of types of objects, generally used for fastening, joining, sealing, or reinforcement. They are often narrow circular rings made from me ...

: a metal or plastic sleeve used to terminate the end of a cable housing *

Fork In cutlery or kitchenware, a fork (from la, furca 'pitchfork') is a utensil, now usually made of metal, whose long handle terminates in a head that branches into several narrow and often slightly curved tines with which one can spear foods ei ...

: a mechanical assembly that integrates a bicycle's frame to its front wheel and handlebars, allowing steering by virtue of its steerer tube * Fork crown: the point at which the two blades of the fork meet below the steerer tube. *

Fork end A fork end, fork-end, or forkend is a slot in a bicycle frame or bicycle fork where the axle of a bicycle wheel is attached. A dropout is a type of fork end that allows the rear wheel to be removed without first derailing the chain. Track bicycl ...

: paired slots on a fork or frame at which the axle of the wheel is attached. See also Dropout *

Frame A frame is often a structural system that supports other components of a physical construction and/or steel frame that limits the construction's extent. Frame and FRAME may also refer to: Physical objects In building construction *Framing (con ...

: the mechanical core of a bicycle, the frame provides points of attachment for the various components that make up the machine. The term is variously construed, and can refer to the base section, always including the bottom bracket, or to base frame, fork, and suspension components such as a shock absorber *

Freehub A freehub is a type of bicycle hub that incorporates a ratcheting mechanism. A set of sprockets (called a " cassette") is mounted onto a splined shaft of the freehub to engage the chain. The ratcheting mechanism is a part of the hub, in contra ...

: a ratcheting assembly onto which a cog or cassette is mounted that allows the bicycle to coast without the pedals turning *

Freewheel Freewheel mechanism In mechanical or automotive engineering, a freewheel or overrunning clutch is a device in a transmission that disengages the driveshaft from the driven shaft when the driven shaft rotates faster than the driveshaft. An ...

: a ratcheting assembly that incorporates one or more cogs and allows the bicycle to coast without the pedals turning *

Gusset In sewing, a gusset is a triangular or rhomboidal piece of fabric inserted into a seam to add breadth or reduce stress from tight-fitting clothing. Gussets were used at the shoulders, underarms, and hems of traditional shirts and chemises made ...

: plates added to the outsides of

frame A frame is often a structural system that supports other components of a physical construction and/or steel frame that limits the construction's extent. Frame and FRAME may also refer to: Physical objects In building construction *Framing (con ...

tubes to strengthen joints. These are more commonly seen on BMX and

mountain A mountain is an elevated portion of the Earth's crust, generally with steep sides that show significant exposed bedrock. Although definitions vary, a mountain may differ from a plateau in having a limited Summit (topography), summit area, and ...

bikes * Hanger: part of frame or an attachment to the frame to which the derailleur is attached (see Derailleur hanger) * Handlebar: a lever attached, usually using an intermediary stem, to the steerer tube of the fork. Allows steering and provides a point of attachment for controls and accessories * Handlebar plug: see Bar plugs * Handlebar tape: a tape wound around dropped handlebars so as to provide padding and grip, usually cork or cloth, sometimes foam rubber *

Head badge A head badge is a manufacturer's or brand logo affixed to the head tube of a bicycle. Head badges may be made of metal or plastic, and they may be held in place with adhesive, screws, or rivets. Some are simply stickers, decals, or painted logos. ...

: manufacturer's or brand logo affixed to the

head tube The head tube is the part of a cycle's tubular frame within which the front fork steerer tube is mounted. On a motorcycle, the "head tube" is normally called the steering head. On bicycles the manufacturer's brand located on the head tube is kno ...

Head tube The head tube is the part of a cycle's tubular frame within which the front fork steerer tube is mounted. On a motorcycle, the "head tube" is normally called the steering head. On bicycles the manufacturer's brand located on the head tube is kno ...

: the tube of a bicycle frame that contains the headset * Headset: the bearings that form the interface between the frame and fork steerer tube * Hood: the rubber brake lever covering on bikes with drop style handle bars * Hub: the core of a wheel; contains bearings and, in a traditional wheel, has drilled flanges for attachment of spokes *

Hub dynamo A hub dynamo is a small electrical generator built into the hub of a bicycle wheel that is usually used to power lights. Often the hub "dynamo" is not actually a dynamo, which creates DC, but a low-power magneto that creates AC. Most modern ...

: a generator inside one of the hubs for powering lights or other accessories *

Hub gear A hub gear, internal-gear hub, internally geared hub or just gear hub is a gear ratio changing system commonly used on bicycles that is implemented with planetary or epicyclic gears. The gears and lubricants are sealed within the shell of the h ...

: a gearbox mounted inside the hub, 3-speed is common, 5, 7 are available ("Sturmey-Archer") and Rohloff make a 14-speed hub. Cable operated by one or two cables *

Indicator Indicator may refer to: Biology * Environmental indicator of environmental health (pressures, conditions and responses) * Ecological indicator of ecosystem health (ecological processes) * Health indicator, which is used to describe the health ...

: a turn signal *

Inner tube An inner tube is an inflatable ring that forms the interior of some pneumatic tires. The tube is inflated with a valve stem, and fits inside of the casing of the tire. The inflated inner tube provides structural support and suspension, while the ...

: a bladder that contains air to inflate a tire. Has a Schrader, "Woods"/"Dunlop" or Presta valve for inflation and deflation *

Jockey wheel A jockey wheel is a wheel-based mechanical system used for steering or guidance, either: * a guide wheel - usually operating as a pair - which is used to move, retain, locate and (usually) add tension to a chain, rope or cable which is then fed in ...

or Pulley wheel: one of two small sprockets of the rear derailleur that guides the chain *

Kickstand A kickstand is a device on a bicycle or motorcycle that allows the bike to be kept upright without leaning against another object or the aid of a person. A kickstand is usually a piece of metal that flips down from the frame and makes contact ...

: a folding attachment used for assisting a bicycle to stand up on its own. Usually mounts to frame near bottom bracket, sometimes near rear dropouts * "Lawyer lips": also called a "lawyer tab", a retention device on the dropouts of the front fork to prevent inadvertent loss of the front wheel in the case it is not properly secured *

Locknut A locknut, also known as a lock nut, locking nut, self-locking nut, prevailing torque nut,. stiff nut or elastic stop nut, is a nut that resists loosening under vibrations and torque. Prevailing torque nuts have some portion of the nut that def ...

: a nut designed not to loosen due to vibration *

Lockring A lock ring is a threaded washer used to prevent components from becoming loose during rotation. They are found on an adjustable bottom bracket The bottom bracket on a bicycle connects the crankset (chainset) to the bicycle and allows the cra ...

: a ring, usually metal, of varying design, that serves to retain a component in place * Lug: a metal connector used to align frame components where they join each other *

Luggage carrier A luggage carrier, also commonly called a rack, is a device attached to a bicycle to which cargo or panniers can be attached. This is popular with utility bicycles and touring bicycles. Bicycle luggage carriers may be mounted on the front or re ...

: any accessory equipment designed to carry tools, gear or cargo *

Master link Figure 2: Schematic of a modern master link. Figure 3: A SRAM Powerlink, joining two ends of a chain. Figure 4: A master link with a slightly raised profile. Note that the embossed arrow should point toward the ''inside'' of the chain-loop. N ...

: a bicycle chain accessory that allows convenient removal and reconnection of an installed bicycle chain without the need for a chain tool *

Nipple The nipple is a raised region of tissue on the surface of the breast from which, in females, milk leaves the breast through the lactiferous ducts to feed an infant. The milk can flow through the nipple passively or it can be ejected by smooth mu ...

: a specialized nut that most commonly attaches a spoke to a wheel rim. In some systems, it provides attachment to the hub *

Pannier A pannier is a basket, bag, box, or similar container, carried in pairs either slung over the back of a beast of burden, or attached to the sides of a bicycle or motorcycle. The term derives from a Middle English borrowing of the Old French ''p ...

: cloth zippered storage bags that mount to sides of luggage racks. Pronounced ''pan-ear'', or ''pan-yer'' (an old English word, which is derived from an old French word) *

Pedal A pedal (from the Latin '' pes'' ''pedis'', "foot") is a lever designed to be operated by foot and may refer to: Computers and other equipment * Footmouse, a foot-operated computer mouse * In medical transcription, a pedal is used to control p ...

: mechanical interface between foot and crank arm. There are two general types; one secures the foot with a mechanical clamp or cage and the other has no connection to lock the foot to the pedal. * Peg: short metal tube, about long and fastened to one or both ends of the wheel axles to either enable the rider perform certain tricks or provide a place for extra riders to stand or rest * Portage strap: a strap (usually made of leather) attached to the inside of the bike frame, designed to make carrying the bike over one's shoulder easier * Pulley wheel: see Jockey wheel * Power meter: a device on a bicycle that measures the power output of the rider *

Quick release A quick release skewer is a mechanism for attaching a wheel to a bicycle. It consists of a rod threaded on one end and with a lever operated cam assembly on the other. The rod is inserted into the hollow axle of the wheel, a special nut is t ...

: a skewer with a lever on one end that loosens when the lever is flipped. Used for releasing wheels and seat posts *

Rack Rack or racks may refer to: Storage and installation * Amp rack, short for amplifier rack, a piece of furniture in which amplifiers are mounted * Bicycle rack, a frame for storing bicycles when not in use * Bustle rack, a type of storage bin ...

: a rack that attaches behind the seat, usually with stays to the rear dropouts, that serves as a general carrier * Reflector: reflects light to make bicycle evident when the illuminated by headlights of other vehicles. Usually required by law but held in disdain by many cyclists * Removable training wheels: used for assisting balance. Comes in pair. Useful for first time bicyclists * Rim: that part of a wheel to which the tire is attached and often forms part of the braking mechanism * Rotor: :1) the disc component of a disc

brake A brake is a mechanical device that inhibits motion by absorbing energy from a moving system. It is used for slowing or stopping a moving vehicle, wheel, axle, or to prevent its motion, most often accomplished by means of friction. Background ...

. :2) another name for a

detangler The detangler, Gyro or rotor is an invention for the freestyle BMX bicycle, allowing the handlebars to turn a complete 360° rotation without the brake cables getting tangled up. A detangler is usually only used for the rear brake cable. The ...

- a device that allows the handlebars and fork to revolve indefinitely without tangling the rear brake cable. * Safety levers: extension levers, and interrupt brake levers. Used to apply brakes in order for the bicycle to slow down or suddenly stop *

Saddle The saddle is a supportive structure for a rider of an animal, fastened to an animal's back by a girth. The most common type is equestrian. However, specialized saddles have been created for oxen, camels and other animals. It is not kno ...

Seat A seat is a place to sit. The term may encompass additional features, such as back, armrest, head restraint but also headquarters in a wider sense. Types of seat The following are examples of different kinds of seat: * Armchair (furniture), ...

: what a bicyclist sits on * Seat rails: a metal framework over which saddle covering is stretched. The seat post attaches to the seat rails by means of a clamp * Seat lug: a frame lug on the top of the seat tube serving as a point of attachment for a clamp to secure the seat post *

Seat tube A bicycle frame is the main component of a bicycle, onto which wheels and other components are fitted. The modern and most common frame design for an upright bicycle is based on the safety bicycle, and consists of two triangles: a main triangle ...

: the roughly vertical tube in a bicycle frame running from the seat to the bottom bracket * Seat bag: a small storage accessory hung from the back of a seat *

Seatpost A bicycle seatpost, seatpin, saddlepole, saddle pillar, or saddle pin is a tube that extends upwards from the bicycle frame to the saddle. The amount that it extends out of the frame can usually be adjusted, and there is usually a mark that indic ...

: a post that the seat is mounted to. It slides into the frame's seat tube and is used to adjust ride height depending how far into the seat tube it is inserted * Seatstay: frame components, small diameter tubes running from top of seat tube to rear dropouts * Shaft-drive: alternate to chain-drive * Shifter: gear shifting control *

Shock absorber A shock absorber or damper is a mechanical or hydraulic device designed to absorb and damp shock impulses. It does this by converting the kinetic energy of the shock into another form of energy (typically heat) which is then dissipated. Most sh ...

: for bicycles with suspensions, a device that limits the rate at which suspension rebounds after absorbing an impact * Side view mirror: aids in looking at the sides prior to moving slowly or turning to the left or to the right *

Skirt guard A skirt is the lower part of a dress or a separate outer garment that covers a person from the waist downwards. At its simplest, a skirt can be a draped garment made out of a single piece of fabric (such as pareos). However, most skirts are fi ...

or coatguard: a device fitted over the rear wheel of a bicycle to prevent a long skirt, coat or other trailing clothes or luggage from catching in the wheel, or in the gap between the rim and the brakes *

Spindle Spindle may refer to: Textiles and manufacturing * Spindle (textiles), a straight spike to spin fibers into yarn * Spindle (tool), a rotating axis of a machine tool Biology * Common spindle and other species of shrubs and trees in genus ''Euony ...

: an axle around which a pedal rotates; threaded at one end to screw into crank arms *

Spoke A spoke is one of some number of rods radiating from the center of a wheel (the hub where the axle connects), connecting the hub with the round traction surface. The term originally referred to portions of a log that had been riven (split l ...

: connects wheel rim to hub. Usually wire with one end swaged to form a head and one threaded end. A typical wheel has 36 spokes *

Speakers Speaker may refer to: Society and politics * Speaker (politics), the presiding officer in a legislative assembly * Public speaker, one who gives a speech or lecture * A person producing speech: the producer of a given utterance, especially: ** In ...

: loudspeakers specifically made for bicycles and/or strollers for cyclists and pedestrians with children to listen music or answer phone calls on their

mobile device A mobile device (or handheld computer) is a computer small enough to hold and operate in the hand. Mobile devices typically have a flat LCD or OLED screen, a touchscreen interface, and digital or physical buttons. They may also have a physical ...

s when bicycling or transporting children. Both

wireless Wireless communication (or just wireless, when the context allows) is the transfer of information between two or more points without the use of an electrical conductor, optical fiber or other continuous guided medium for the transfer. The most ...

and

wired ''Wired'' (stylized as ''WIRED'') is a monthly American magazine, published in print and online editions, that focuses on how emerging technologies affect culture, the economy, and politics. Owned by Condé Nast, it is headquartered in San Fra ...

speakers are available to mount on their handlebars or frames. Even though speakers specifically made for bicycles are available to purchase, but depending on the sizes and shapes and the cyclists' ingenuities, any speakers can be strapped on to them typically by using silicone strappings. These speakers meant to eliminate the risks of using

headphone Headphones are a pair of small loudspeaker drivers worn on or around the head over a user's ears. They are electroacoustic transducers, which convert an electrical signal to a corresponding sound. Headphones let a single user listen to an au ...

s such as obliviousness of incoming cars and other warnings, and continuous playing of music from them would also alert other cyclists and pedestrians nearby *

Sprocket A sprocket, sprocket-wheel or chainwheel is a profiled wheel with teeth that mesh with a chain, track or other perforated or indented material. The name 'sprocket' applies generally to any wheel upon which radial projections engage a chain passi ...

or cog: wheel with teeth that meshes with the chain; one of the wheels in the

crankset The crankset (in the US) or chainset (in the UK), is the component of a bicycle drivetrain that converts the reciprocating motion of the rider's legs into rotational motion used to drive the chain or belt, which in turn drives the rear wheel. ...

* Steerer tube: a tube on top of a fork that is inserted through frame and serves as an axle by means of which bicycle can be steered *

Stem Stem or STEM may refer to: Plant structures * Plant stem, a plant's aboveground axis, made of vascular tissue, off which leaves and flowers hang * Stipe (botany), a stalk to support some other structure * Stipe (mycology), the stem of a mushro ...

: a bracket used to attach handlebars to steerer tube of fork. Usually secured by pinch bolts *

Tire A tire (American English) or tyre (British English) is a ring-shaped component that surrounds a Rim (wheel), wheel's rim to transfer a vehicle's load from the axle through the wheel to the ground and to provide Traction (engineering), t ...

: as in common usage. Usually pneumatic. A

tubular tire A tubular tyre, referred to as a tub in Britain, a sew-up in the US, a single in Australia, or just a tubular is a bicycle tyre that is stitched closed around the inner tube to form a torus. The combination is then glued (sometimes with two-sided ...

is glued to the wheel rim; most tires use tubes, but tubeless tires and rims are increasingly common * Toe clips: a metal or plastic cage attached to a pedal. Usually has an adjustment strap. Secures foot to pedal for increased control and more effective transfer of power from foot to drive chain *

Top tube A bicycle frame is the main component of a bicycle, onto which bicycle wheel, wheels and list of bicycle parts, other components are fitted. The modern and most common frame design for an upright bicycle is based on the safety bicycle, and consis ...

: frame member leading from head tube to seat tube *

Valve stem A valve stem is a self-contained valve which opens to admit gas to a chamber (such as air to inflate a tire), and is then automatically closed and kept sealed by the pressure in the chamber, or a spring, or both, to prevent the gas from escaping ...

or simply valve: port for adding or releasing air from the inner tube. Two types are commonly used: Presta and Schrader. A third type, the Woods/Dunlop valve, can still be found in Europe and Asia. *

Wheel A wheel is a circular component that is intended to rotate on an axle Bearing (mechanical), bearing. The wheel is one of the key components of the wheel and axle which is one of the Simple machine, six simple machines. Wheels, in conjunction wi ...

: as in common usage. Traditionally and most commonly spoked * Wingnut: for attaching wheels before the development of the quick release skewer

References

:International Standard ISO 8090: Cycles — Terminology (same as: British Standard BS 6102-4)

External links

Multilingual Bicycle's Vocabulary
BEMI {{DEFAULTSORT:Bicycle Parts

Parts Part, parts or PART may refer to: People *Armi Pärt (born 1991), Estonian handballer * Arvo Pärt (born 1935), Estonian classical composer *Brian Part (born 1962), American child actor *Dealtry Charles Part (1882–1961), sheriff (1926–1927) a ...

Lists of parts