ACT 2010 Chevrolet Corvette XACT Flywheel Prolite
ACT 600585 is the XACT Prolite flywheel for the 2010 Chevrolet Corvette with the manual gearbox, covering the 6.2L LS3 Base and Grand Sport and the 7.0L LS7 Z06. It is also the same part ACT catalogs for a long list of other LS-powered manual cars, from the 1997 Corvette through the 2015 Camaro SS. Owners usually come looking for it after a clutch job reveals a heat-checked or cracked factory flywheel, or when they are building a track car and want the engine to rev and fall faster than the heavy stock part allows.
The flywheel bolts to the back of the LS crankshaft and does three jobs: it carries the 168-tooth ring gear the starter engages, it provides the friction face the clutch disc clamps against, and it stores rotating energy that smooths out engine pulses. ACT forges the Prolite in one piece from chromoly steel, then CNC machines and computer balances it, and induction hardens the ring gear teeth. There is no pressed-on ring gear to spin loose and no bolted friction insert to warp. ACT lists the finished weight at 14.6 lb with a 280 mm (11 in) friction surface, and it carries SFI 1.1 certification.
Prolite is the lightest flywheel ACT makes for this engine family. Less inertia means the engine climbs through the rev range faster and the car pulls harder out of corners. The trade is drivability: ACT rates the feel as dramatically improved response with mild to moderate gear rattle, recommends it for race use, and says it is preferred for road racing and rally. On a daily-driven Corvette expect to use a little more throttle pulling away and to hear more gear noise at idle. Our lightweight vs stock flywheel guide covers that decision in more depth.
A C6 clutch problem is often hydraulic, so check that first. The release bearing is a concentric slave inside the bellhousing, and a leaking or tired slave causes drag, grinding into gear and a soft pedal that look like a worn clutch. For slip, use the high-gear, low-rpm, full-throttle test in our slipping diagnosis guide: if rpm rises faster than road speed, the clutch is not holding. The flare vs slip guide helps rule out other driveline causes. The final call on the flywheel is made with the transmission out. Deep heat checking, cracks or a surface that will not clean up within ACT's resurfacing limit means replace it. See resurface vs replace for how to judge it.
Our listing names the 2010 Corvette. ACT's application chart for 600585 includes the 2010 Corvette Base 6.2L, Grand Sport 6.2L and Z06 7.0L, along with 1997-2004 Corvette 5.7L, 2005-2007 Corvette 6.0L, 2008-2013 Corvette 6.2L, 2010-2015 Camaro SS 6.2L, 1998-2002 Camaro Z28 and Firebird, 2004-2006 GTO, the CTS-V and the 2005-2006 SSR. The 2009-2013 ZR1 is not on ACT's list, and automatic cars use a flexplate, not this flywheel. ACT stresses that any clutch used with it must match the flywheel step, ring gear tooth count, thickness and ring gear offset, so confirm your clutch is designed for the factory-style LS flywheel. If your car has a swapped engine or twin-disc conversion, send us the year and VIN before ordering. More flywheels are in our hard parts collection.
| Brand | ACT |
| Part number | 600585 |
| Fits | ACT 2010 Chevrolet Corvette XACT Flywheel Prolite |
| Vehicle fitment | Chevrolet Corvette Xact (2010) |
| Type | Flywheels |
| Condition | New |
| Ships | Same business day (in stock), from the USA |
| Warranty | 1-year |
ACT lists it for the 2010 Corvette Base and Grand Sport with the 6.2L and the Z06 with the 7.0L, manual transmission only. The ZR1 is not on ACT's application list, and automatic cars use a flexplate instead of a flywheel.
ACT lists the 600585 at 14.6 lb. It is ACT's lowest-inertia flywheel for the LS family, built for throttle response and acceleration. Weigh your old flywheel when it comes out if you want an exact comparison for your car.
ACT says its flywheels work with clutches built for the factory-style flywheel, as long as the step, ring gear tooth count, thickness and ring gear offset match. A clutch sold as part of a flywheel-specific conversion kit must be used only with its matching flywheel.
Somewhat. ACT rates the Prolite for race use with mild to moderate gear rattle and reduced drivability. Expect quicker revs and a bit more throttle needed when pulling away. Street drivers who want less noise often choose a heavier flywheel.
Yes. ACT says XACT flywheels resurface like a stock flywheel on a good grinder. Remove only enough to clean up the surface, never more than 0.040 in, and keep the correct step.
