The JASPER 4-Speed Transmission played a key role in the 2009 NASCAR Sprint Cup
Series with ten victories for the year. With driver changes and team mergers affecting
the NASCAR landscape, six full-time NASCAR Sprint Cup Series teams and two NASCAR
Nationwide Series teams ran the JASPER 4-Speed during the 2009 season on a full time
basis.
The Sprint Cup teams that ran the JASPER 4-Speed are three Toyota teams of Joe Gibbs
Racing (#11 driven by Denny Hamlin, #18 driven by Kyle Busch and #20 driven by Joey
Logano); the two Toyota teams of Michael Waltrip Racing (#00 driven by David
Reutimann and #55 driven by Michael Waltrip); and the #47 car of the JTG/Daugherty
team driven by Marcos Ambrose.
The JASPER 4-Speed Transmission also ran full time in the NASCAR Nationwide Series
entries of Michael Waltrip Racing and Penske Racing. Michael Waltrip drove the #99 car
for his team while Justin Allgaier piloted the #12 car for Penske.
Penske NASCAR Sprint Cup Series drivers Kurt Busch in the #2 car, David Stremme in
the #12 car and Sam Hornish, Jr. in the #77 car also ran JASPER differentials
this past season.
The NASCAR Driveline Division at Jasper Engines & Transmissions has developed a single
rail shifter design that will be available in 2010. The single rail design offers the advantages
of less weight and fewer moving parts. In addition, all of the shift linkage except for the
main shift rail will be internal, keeping these parts away from any outside debris.
(Click on the following link for JASPER 4-Speed Weekly Performance)
http://www.jasperengines.com/racing.php
