RAM TRUE BALANCE BILLET FLYWHEELS

 The flywheel is the foundation of the clutch and flywheel system and, as an energy‑storage device, plays a critical role in determining how much power is available at launch. A heavier flywheel stores more rotational energy than a lighter one, providing additional inertia to help prevent the engine from bogging when the vehicle is put under load. This makes heavier flywheels beneficial for engine and gearing combinations that require more stored energy to maintain RPM during launch.

A lighter flywheel stores less energy at launch but allows the engine to accelerate more quickly once the vehicle is moving. To use a lighter flywheel effectively, factors such as vehicle weight, engine operating RPM, and—most importantly—gearing must be considered. Insufficient gear ratio will cause the engine to nose over or bog at launch due to inadequate stored energy.

See application chart at the bottom of the page for complete listings!

What flywheel do I need?

Billet steel flywheels

RAM billet steel flywheels are recommended as direct replacements for factory cast flywheels in high‑performance and racing applications. Each flywheel is CNC‑machined from certified steel and manufactured to exceed all applicable SFI specifications. Following machining, every unit is Blanchard‑ground parallel to the crankshaft mounting surface to ensure minimal runout and provide an optimal friction surface for the clutch disc. Steel flywheels are ideal for heavier drag‑race vehicles or for drivers seeking maximum drivability in street‑driven applications, offering a balance of durability, inertia, and smooth engagement.

Lightweight billet steel flywheel

RAM lightweight billet steel flywheels provide an optimal balance of reduced mass and long‑term durability for applications where quicker engine acceleration and deceleration are desired. Their lower rotating mass allows the engine to respond more rapidly to throttle input while still maintaining the strength required for high‑performance use.

RAM recommends lightweight steel flywheels for any application utilizing a RAM Concept 10.5 or Concept 9.5 dual disc clutch.

Billet aluminum flywheels

RAM billet aluminum flywheels are the preferred choice for all‑out competition vehicles. Each unit is CNC‑machined from certified aluminum and manufactured to exceed all applicable SFI standards. A defining feature of every RAM aluminum flywheel is the ¼‑inch steel friction insert*, engineered to withstand the thermal load created by controlled clutch slippage during launch and gear changes.

In a properly tuned competition clutch system, a specific amount of slippage is required for optimal performance. The flywheel insert must retain enough mass to absorb the resulting heat without distorting, ensuring consistent engagement and maximum clutch life. Thinner inserts are more prone to warping or lifting, which can create uneven contact across the clutch disc. The thicker RAM insert remains flatter under extreme conditions and dissipates heat more effectively.

After the steel insert is installed, each flywheel is precision‑ground to ensure the friction surface is perfectly parallel to the crankshaft flange. This process minimizes runout and provides the ideal mating surface for your chosen clutch disc.

See chart below for complete listings.