If you are looking to upgrade your flywheel during a clutch change, look no further than this single mass steel flywheel upgrade . Brought to you by ECS Tuning, you can eliminate between 8.5 - 9.5lbs of rotating mass.   Designed for any 12v VR6, you can cut your rotational mass to help your car perform better. Because the engine is using less energy to spin the flywheel, that frees up some extra horsepower. Your vehicle will rev noticeably faster while not sacrificing clutch feel. You will notice less flywheel chatter during idling and while under load.   Includes flywheel to crankshaft fasteners.