Twin-Disc Clutch Kits, designed for 2008-13 Dodge Challenger SRT8 6.1/6.4L and 2009-13 Dodge Challenger R/T 5.7L, deliver nearly twice the disc surface area of conventional clutches. Choose from Heavy Duty Street (875 ft./lbs.), Xtreme Street (970 ft./lbs.) and MaXX Xtreme Street (1,150 ft./lbs.) clutch kits. Heavy Duty Steet kit offers a low to moderate pedal feel; Xtreme Street kit provides a moderate to stiff pedal, while the Maxx Xtreme Street kit delivers a stiff to very stiff pedal and is recommended for race use only. All kits feature ACT?s proprietary positive lift floater system, which compensates for disc wear. CNC machined flywheel included.