The Hydrospace is the world's first four-stroke

stand-up Stand-up comedy is a comedic performance to a live audience in which the performer addresses the audience directly from the stage. The performer is known as a comedian, a comic or a stand-up. Stand-up comedy consists of one-liners, stories, ...

jet ski Jet Ski is the brand name of a personal watercraft (PWC) manufactured by Kawasaki, a Japanese company. The term is often used generically to refer to any type of personal watercraft used mainly for recreation, and it is also used as a verb to ...

, or

personal watercraft A personal watercraft (PWC), also called water scooter or jet ski, is a recreational watercraft that a rider sits or stands on, not within, as in a boat. PWCs have two style categories, first and most popular being a runabout or "sit down" whe ...

. It was introduced in October 2005 by Hydrospace. In 2007, Hydrospace changed their name to HSR-Benelli following the acquisition of Benelli Motori (related to, but unaffiliated with, Benelli shotguns or Benelli motorcycles). The company originated in

Pöchlarn Pöchlarn ( bar, Böchlarn) is a town in the district of Melk in the Austrian state of Lower Austria. The painter and writer Oskar Kokoschka was born here in 1886. Population Personalities * Rüdiger von Bechelaren * Oskar Kokoschka, painte ...

Austria Austria, , bar, Östareich officially the Republic of Austria, is a country in the southern part of Central Europe, lying in the Eastern Alps. It is a federation of nine states, one of which is the capital, Vienna, the most populous ...

, with sales networks worldwide. The Hydrospace is a single-passenger stand-up watercraft which was designed primarily for racing. Until 2008, the only model offered was the "Hydrospace S4", with a retail price of around US$15,000. The S4 is powered by a two-cylinder water-cooled

four-stroke A four-stroke (also four-cycle) engine is an internal combustion (IC) engine in which the piston completes four separate strokes while turning the crankshaft. A stroke refers to the full travel of the piston along the cylinder, in either directio ...

engine An engine or motor is a machine designed to convert one or more forms of energy into mechanical energy. Available energy sources include potential energy (e.g. energy of the Earth's gravitational field as exploited in hydroelectric power gen ...

with a displacement of 749cc, rated at 110

horsepower Horsepower (hp) is a unit of measurement of power, or the rate at which work is done, usually in reference to the output of engines or motors. There are many different standards and types of horsepower. Two common definitions used today are the ...

. The engine is equipped with a

turbocharger In an internal combustion engine, a turbocharger (often called a turbo) is a forced induction device that is powered by the flow of exhaust gases. It uses this energy to compress the intake gas, forcing more air into the engine in order to pro ...

from the factory, operating at 7.7 pounds per square inch of boost. The engine uses 91 US octane minimum gasoline. The S4 has a dry weight of , making it the second-heaviest stand-up ever made, second only to Sea-doo's 3D which had a dry weight of . As of the October 2016 unveiling of the Kawasaki SXR1500 at , the S4 is now the third-heaviest stand-up. Although touted as being the most advanced stand-up ever manufactured, the S4 has been plagued with problems. They have, however, been resolved over the years. In 2008, the newly formed HSR-Benelli released additional models of personal watercraft, including a new runabout model. HSR-Benelli has succeeded in winning several World Championship titles since 2006. In December, HSR-Benelli changed its name to Benelli srl, moved to

Pesaro Pesaro () is a city and ''comune'' in the Italian region of Marche, capital of the Province of Pesaro e Urbino, on the Adriatic Sea. According to the 2011 census, its population was 95,011, making it the second most populous city in the Marche, ...

Italy Italy ( it, Italia ), officially the Italian Republic, ) or the Republic of Italy, is a country in Southern Europe. It is located in the middle of the Mediterranean Sea, and its territory largely coincides with the homonymous geographical re ...

and is working on a new generation of PWCs which will be available for 2012.

The 2010 model line includes

* S4 black and white * Series-R Sport Edition

External links

Benelli Group
{{Primary sources, date=February 2008 Personal water craft