- 10.5 x 1-23 spline
- Diaphragm style
- 8 spring hub
- For applications up to 650 hp
- Includes pressure plate, clutch disc, release bearing
- Requires 1545 or 2545 RAM flywheel
- Requires RAM 493, 563, and 529-8 or equivalent
These RAM HD clutch kits are ideal for street/strip applications. They produce 30-60 percent more clamping pressure over stock and can handle power up to 650 hp. HDX clutches feature ductile iron, explosion-resistant pressure rings that meet SFI certifications for use in competition. The HD disc provides the smooth engagement necessary for maximum performance and drivability on the street with no chatter on takeoff. Most clutch discs utilize an 8-sprung hub with an upgraded organic friction material.