RAM billet aluminum flywheels are CNC machined from certified materials and exceed SFI standards. A key feature of a RAM aluminum flywheel is the 1/4 inch steel friction insert. A well tuned competition clutch system has a predetermined amount ofslippage 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 flangefor minimum runout 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.