Clutch Masters aluminum flywheels are CNC-machined and precision-balanced from 6061 aluminum or 1045 steel billet cores, then hard-anodized (aluminum) or black oxide coated (steel) for corrosion resistance. Each flywheel is zero balanced and SFI 1.2 certified for motorsports. Replaceable steel insert friction surfaces reduce the need for resurfacing and they work with OEM or aftermarket clutches built to OEM specs.
Clutch Masters 94-04 Mazda Miata 1.8L Aluminum Flywheel