PorscheLightweight Flywheel Clutch Upgrade Kit for 996 / 997 / 997.2 GT3 / RS / 4.0 / 964

With the Porsche single mass (Light Weight) flywheel kit you get considerably better acceleration resulting from less rotational mass. It's what gives the GT3RS an edge over the regular GT3. The engine will no longer feel lethargic/lazy when revving. The dual-mass (or "twin mass") flywheel that we replace is effectively two flywheels in one, connected to each other by a coupling that allows the two flywheels to rotate relative to each other in a range up to 15 degrees, but with a small amount of resistance to this movement. This movement and the inertia/resistance of the mechanism and mass of the flywheels, therefore cushioning the power pulse variation that can cause gear rattle- this was/is the case much more on 996s than 997s. Dual-mass flywheels use a simple solid-center clutch disk. It is more difficult to change the speed of the dual-mass flywheel, whether accelerating it or slowing it down... that means besides inhibiting engine acceleration to some degree, it also inhibits the deceleration that occurs between every power pulse. A single-mass flywheel is the same sort of design as a solid aluminum lightweight flywheel: a rigid disk of metal, either aluminum or steel. The weight difference is significant with the stock dual mass weighing in at 28.5 pounds vs. single mass at 14.3 pounds. If ordering for a 964 we highly recommend utilizing our ECU / Performance Tuning kit to prevent stalling off idle.

RS Clutch Kit includes:

• 4.0 RS clutch disc
• throw-out bearing 
• pilot bearing
• guide tube and screws
• flywheel bolts
• pressure plate bolts
• ring gear 
• 4.0 RS pressure plate **
• 4.0 RS light weight flywheel

** Beware of cheaper kits you find online! They often will include the MUCH cheaper riveted pressure plate that came stock on a 997.2 GT3RS 3.8. The pressure plate was a common weakness/failure point on those cars because the rivets holding the straps together would break or come loose. The best replacement pressure plate is from the GT3RS 4.0 and is bolted together. It's also much more expensive and only sold through Porsche dealers. We use this version in our kits.

Additional Pulley Kit add-on required on all 996 or 997.1 GT3/RS cars (not required for 997.2 models)

NOTE: After the car warms up and at idle there is some additional rattle/noise from the transmission. This is not very noticeable like on other cars but is normal just like on the 997 GT3 RS.

Example Video Demo on 997:

You can see this product installed on cars in our project gallery:

• 2011 997 GT3 With SharkWerks Exhaust, EVOMSit & RS Flywheel Conversion
• 2007 997 GT3 With RS430, RS Clutch/Flywheel Conversion & HRE Wheels
• 2008 997 GT3 RS430 & GT3RS Conversion with HRE P43 Monoblok Wheels
• 2008 997 GT3 RS430 with RS Clutch Conversion & 19-inch HRE P43 Wheels