Ultra light (8.38lbs) forged EN8steel race flywheel for non Verto clutch with standard ring gear .Forged is more rigid at high speed. The latest refinement of the Ultra-light Mini flywheel is now made symmetrically to reduce harmonics vibrations caused by earlier versions (those with just 3 large lightening slots)- yet it still weighs just over 8 lbs.! This is considerably lighter than a safely lightened standard iron flywheel
