The ACT XACT Streetlite Flywheel for 2001–2006 BMW M3 (E46) is a lighter-than-stock, serviceable flywheel engineered for reduced inertia and balanced strength. Material distribution emphasizes rigidity, heat tolerance and low rotational mass for improved throttle response suitable for street or drag applications. The unit can be resurfaced as a serviceable option without replacing additional parts.
ACT 01-06 BMW M3 E46 XACT Flywheel Streetlite