Clutch Masters Flywheel Friction Locks for Audi and Volkswagen applications use 3M friction shim technology with a nickel-coated steel substrate and partially embedded diamond particles. Installed thickness is specified at .006"-.009" so assembly spacing remains essentially unchanged; FFLs bite into mating surfaces to reduce the risk of flywheel loosening and are reusable after disassembly, offering increased shear and torque capacity.
Clutch Masters Audi/Volkswagen Flywheel Friction Lock