Flywheel, Spec, 2004-07 CTS-V , Steel

SPEC Flywheels are CNC manufactured at an unheard-of .001 tolerance, in an industry where the standard is .010. This precision manufacturing process ensures perfect balance and a perfectly flat bedding surface for the clutch disc, both of which also contribute to the ultimate in safety for competitive environments. All SPEC billet flywheels carry SFI certification and are manufactured and developed for specific driving environments and recommended based on how each car reacts to changes in rotating mass. SPEC flywheels are NOT a one-fits-all lightweight flywheel, though they can be used for an array of driving habits and racing/high performance applications. Aluminum Flywheels are generally half the weight of stock steel flywheels and provide faster revving, less drag on the engine, and quicker response then heavier steel flywheels. Steel Flywheels tend to be a little easier to drive on the street due to the fact they lose less RPMS while shifting. Aluminum Flywheels also feature a replaceable steel friction plate.