Key Features
- 1200 crank horsepower capacity with higher clamp load than standard RXT twin disc
- Two ceramic friction discs with diaphragm pressure plate for aggressive yet streetable engagement
- Patent-pending McLeod adapter ring bolts directly to stock ZR1 twin disc flywheel
- 26-spline x 1-1/8-inch input shaft hub matches factory TR-6060 transmission
- Ceramic disc facings deliver smooth engagement with soft pedal effort
- Solid hub disc design for maximum reliability under extreme loads
- No flywheel included - economical upgrade that uses your existing factory flywheel
- Made in the USA with lifetime technical support
Description
When your supercharged LS9 ZR1 makes power beyond the factory clutch's 604 lb-ft limit, the McLeod RXT 1200 HD Twin Disc Clutch Kit delivers the holding power you need without sacrificing daily drivability. This heavy-duty variant of McLeod's proven RXT twin disc design features increased clamp load to handle 1200 crank horsepower - roughly double the stock ZR1's output - while maintaining the smooth engagement and stock-like pedal effort that makes a twin disc clutch streetable.
The RXT 1200 HD uses ceramic-faced friction discs that provide slightly more aggressive engagement than organic materials, increasing holding power while still delivering progressive take-up. The twin disc configuration spreads torque load across four friction surfaces rather than two, enabling tremendous clamping force while actually reducing individual disc size and rotational inertia. The result is a clutch that grabs harder than a single-disc setup but feels lighter at your left foot.
McLeod's patent-pending adapter ring is the key to this kit's value proposition. It allows the RXT pressure plate and twin disc assembly to bolt directly to your existing ZR1 factory twin disc flywheel - no dedicated flywheel purchase required. This makes the RXT 1200 HD an economical path to serious holding power for street/strip ZR1 builds that have outgrown stock clutch capacity but want to retain their flywheel.
Proper break-in is critical: McLeod requires 500-750 miles of stop-and-go city driving (approximately 1200-1500 clutch cycles) before any wide-open-throttle use or dyno tuning. The flywheel must be resurfaced with a coarse stone-ground finish prior to installation, and the pilot bearing should be replaced. Made in the USA with comprehensive installation instructions and lifetime technical support from MDL.
Kit Includes
- Diaphragm pressure plate assembly
- Two ceramic friction discs (26-spline x 1-1/8-inch, solid hub)
- Floater plate
- McLeod patent-pending adapter ring (bolts to stock ZR1 flywheel)
- Pilot alignment tool
- Installation instructions
- Lifetime technical support
Note: This kit does not include flywheel, pilot bearing, or throwout bearing. Designed to bolt to the factory 2009-2013 ZR1 Corvette twin disc flywheel.