Inside the bellhousing, flywheel thickness is the big variable. Adding or reducing thickness (as illustrated by two aftermarket 'wheels) is the easiest way to change flywheel weight, so heavy ...

The dual-disc clutch—often called a twin-disc or multi-disc clutch—is designed to increase holding power over an OE-style single-disc clutch. Not to be confused with a dual-clutch transmission (DCT), ...