Refresher on the 2015 NASCAR Sprint Cup Series Race Package:

“” Reduction of horsepower to 725 via tapered spacer
“” Roller valve lifters to replace flat valve lifter
“” Lower rear differential gear ratios targeting 9,000 RPM
“” Rear spoiler adjustment to 6 inches high (2014 height: 8 inches)
“” Optional driver adjustable track bar
“” 38-inch wide radiator pan
“” Minimum vehicle weight drops 50 lbs. via ballast reduction (2014 weight: 3,300 w/o driver)
“” Updated qualifying formats for all tracks
(2-27-2015)