D Sports Racing now known as Prototype 2 is a

sports prototype A sports prototype, sometimes referred to as simply a prototype, is a type of race car that is used in the highest-level categories of sports car racing. These purpose-built racing cars, unlike street-legal and production-based racing cars, are n ...

racecar class for

road racing Road racing is a form of motorsport racing held on a paved road surface. The races can be held either on a closed circuit or on a street circuit utilizing temporarily closed public roads. Originally, road races were held almost entirely on publ ...

by the

Sports Car Club of America The Sports Car Club of America (SCCA) is a non-profit American automobile club and sanctioning body supporting road racing, rallying, and autocross in the United States. Formed in 1944, it runs many programs for both amateur and professional r ...

. It has been called the one racing category that remains unfettered by regulations that have throttled innovation elsewhere in motorsport. Usually known simply as DSR, the class began in 1968. DSR evolved from the SCCA's older H Modified class, which traces its roots back to the early 1950s. Today's DSR cars normally use a 1000cc four cylinder engine sourced from a Japanese motorcycle. Several other engines are allowed. DSR's generally weigh under 1000 lbs with the driver and make 200 bhp at 13,000rpm. The relatively low cost of the engines and some new chassis manufacturers led to an explosion in growth of the class between the years 2000 and 2008.SportsCar magazine, October 2002, p.22 DSR's were the fastest class at the SCCA National Championship races in 2008.

Manufacturers

* A-Mac * Cheetah * Diasio * Dragon * Galmer * LSR Prince * Radical * Speads *

Stohr Cars Stohr Cars designs and builds racing cars mainly for competition within the Sports Car Club of America. The business was founded by Lee Stohr in 1991 and is based in Denver, NC, USA. 138 racing cars have been produced as of December 2021. Stoh ...

* West Race Cars

SCCA National Championship Runoffs

References

{{Reflist

External links

Sports Car Club of America

Sports Racer Network
Sports Car Club of America Sports car racing series Sports prototypes