Powergrip HD Clutch Set RAM Powergrip clutch set includes the release bearing and tool at no extra charge! Powergrip set features increased clamp load pressures and a blend of sintered and organic friction materials for an excellent blend of drivability and increased holding power of up to 120%. RAM clutch set provides increased holding capacity throughout the entire RPM range, not just at high RPM. The flywheel is the foundation of the clutch system, and because it is an energy storage device, also determines the amount of power available to launch the car. A heavy flywheel stores more energy as it spins than a light flywheel. If your engine and gearing combination requires more power or inertia to make the car launch without bogging the motor, you will want a heavier flywheel. Keep in mind, though, that a heavier flywheel will be slower to accelerate through the gears. A lighter flywheel creates less inertia at launch, but will accelerate quicker through the gears. In order to effectively use a lighter flywheel, you must consider the car weight, operating RPM of the engine, and most importantly, the gearing. Too little gear will cause the engine to nose over or bog on launch The choice for most all out competition vehicles, RAM billet aluminum flywheels are CNC machined from certified materials and exceed SFI standards. A key feature of a RAM aluminum flywheel is the ¼ inch steel friction insert*. A well-tuned competition clutch system has a predetermined amount of slippage at launch and on the gear changes. The flywheel insert must have enough mass to absorb the heat generated by slippage without distortion; ensuring maximum clutch life and consistent performance. Thinner inserts can warp and lift causing uneven engagement across the clutch disc. The thicker insert remains flatter and dissipates the heat better. Each flywheel is precision ground after the steel insert is installed to ensure the friction surface is parallel with the crankshaft flange for minimum run out and to provide the optimum mating surface for your choice of clutch disc. Ram generally does not recommend aluminum flywheels for street use unless it is an autocross type of car. All Ram flywheels are surface ground and factory balanced to the engine Includes: 535081 97-07 Powergrip 650HP LS1, LS6, LS2 535159 97-07 Ram Aluminum Flywheel |