D Sports Racing

D Sports Racing now known as Prototype 2 is a Sports Car Club of America class for purpose-built, 'LeMans-style', closed wheel roadracing cars. It has been called the one racing category that remains unfettered by regulations that have throttled innovation elsewhere in motorsport.[1]

Mark Jaremko, 4 time DSR National Champion

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.[2]

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.[3] 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
  • West Race Cars

SCCA National Championship Runoffs
YearWinnerCarEngine
1966 Ed LukeLotusChevrolet
1967 Wayne KochKoch
1968 Fred PlotkinAbarth Special
1969 Eric KermanArachnidHonda
1970 Marvin ThomsonBobsy-Imp
1971 Harry StephensonMaruHonda
1972 Harry StephensonMaruHonda
1973 Ronald DennisOcelotSuzuki
1974 Bob MarshallQuasarSuzuki
1975 Kendall NoahOcelot Mk.ASuzuki
1976 Jeff MillerWynnfurstKohler
1977 Jeff MillerWynnfurstKohler
1978 Dave LeesonLeGrand Mk.18Kohler
1979 Dave LeesonLeGrand Mk.18Kohler
1980 Jerry SmithLeGrand Mk.25Kohler
1981 Jeff MillerLola T540Kohler
1982 Paul DeckerLeGrand Mk.18Suzuki
1983 Jeff MillerWynnfurstKohler
1984 Thomas JagemannLolaKohler
1985 Paul DeckerDecker Mk.1/2
1986 Paul DeckerDecker Mk.1
1987 Paul DeckerDecker Mk.1
1988 Al Beasley, Sr.Bease-Decker Mk.II
1989 Travis DuderMcCann
1990 Michael ReupertLola
1991 Travis DuderCrossleNissan
1992 Travis DuderCrossleNissan
1993 Travis DuderCrossleNissan
1994 David KaiserLeGrand Mk.25D
1995 David KaiserLeGrand Mk.25D
1996 David KaiserLeGrand Mk.25D
1997 Michael ReupertLola
1998 Travis DuderCheetah SR-1
1999 Bruce SunseriCheetah SR-1
2000 Al Beasley, Jr.BeaseDecker Mk.1
2001 Marc HooverCheetahMazda
2002 Mark JaremkoStohr 03D
2003 Mark JaremkoStohr 03D
2004 John HillStohr
2005 Mark JaremkoStohr WF1
2006 Mark JaremkoStohr WF1
2007 J.R. OsborneStohr WF1
2008 J.R. OsborneStohr WF1
2009 Garry CrookStohr WF1Suzuki
2010 Lawrence LoshakStohr WF1Suzuki
2011 Tom BootzStohr WF1Suzuki
2012 Scott TuckerWest WX10Suzuki
2013 Chris FarrellStohr WF1Suzuki
Prototype 2
2014 Fabian OkonskiStohr 01DSuzuki
2015 Chris FarrellStohr WF1Suzuki
2016 Jeff ShaferStohr WF1Suzuki
2017 Jeff ShaferStohr WF1Suzuki
2018 Tim Day Jr.Stohr WF1Suzuki
2019 Tray AyresVan Diemen RF00Mazda

References
  1. RaceCar Engineering magazine, February 2005, p.58
  2. SCCA Rulebook
  3. SportsCar magazine, October 2002, p.22
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