The Sport series is the newest clutch in RPS' inventory. Sport Series Pressure Plates are similar to "HD" pressure from ACT. This clutch kit can hold up to 625 foot pounds of torque & is 67% stiffer than stock. They are intended for use in cars with mild modifications (exhaust, intake, boost controller, small turbo upgrade, etc). The Solid Hub disc is a 6-puck design with alternating pucks of carbon & metal. It holds more power than the Street Disc yet is also very driveable & slippable. It will last longer than the Street Disc and requires a proper break-in.