Product Description
Proven on the track and trusted by champions, the Brock’s Performance Clutch Mod Kit is the upgrade every serious ZX-10R rider needs for smoother, faster, and more consistent launches. Seen on David Fondon's XDA Super Stock Championship Winning ZX-10R, this kit has become the go-to solution in Real Street, Grudge, and other competitive hand-clutch applications—and it’s especially effective for heavier riders demanding maximum performance.
By disabling the factory slipper clutch, this kit eliminates the harsh grab-and-jerk of the stock setup, allowing riders to launch smoothly from a dead stop. The result is longer clutch life, improved drivability, lower ETs, and more MPH.
Engineered for Performance
The Super Stock kit includes extra heavy-duty clutch springs and precision shims to increase clutch pressure without introducing chatter or sacrificing top-end speed. With shim-adjustable spring tops, riders can fine-tune their setup to find the perfect balance of launch control and performance.
Each spring is made from valve-spring quality steel, shot-peened and stress-relieved to withstand the extreme heat and stress of high-horsepower drag racing. This attention to detail ensures consistent performance and reliability pass after pass.
FEATURES
- Eliminates ‘bucking’ during dead-stop launches – smoother takeoffs, lower ETs
- Disables factory back-torque limiter (slipper clutch) for improved drag-style performance
- Smoother operation, longer clutch life, and improved drivability
- Heavy-duty clutch springs – increased lever pressure for more consistent power transfer
- Valve-spring grade material, shot-peened and stress-relieved for durability
- Includes .025" and .062" thick steel shims for pressure adjustment
- Black oxide finish with engraved Brock’s Performance logo
- Click here to view Clutch Mod Installation Video
- Click here to view Spring Kit Installation Instructions
KIT INCLUDES
- 1 Clutch Mod
- 6 Extra Heavy-Duty Clutch Springs
- 6 Shim-Adjustable Spring Tops
- 6 Steel Shims (.025" thick)
- 12 Steel Shims (.062" thick)
Attention: While casual street riding is generally unaffected, some rear-wheel ‘chirp, hop, or chatter’ may be experienced depending on riding habits. All Brock’s Performance products are designed for Competition Use Only.
