The best-kept secret in Real Street, Grudge, and other serious hand-clutch applications—especially for heavier riders—is here. The Brock’s Performance Clutch Mod Kit is the go-to upgrade for anyone looking to launch their ZX-14R smoothly and consistently from a dead stop.
By disabling the factory slipper clutch, this kit eliminates the harsh grab-and-jerk of the stock setup and delivers smoother operation, longer clutch life, lower ETs, and more MPH. Whether you’re racing heads-up, chasing records, or just demanding maximum performance, this clutch mod gives you the edge.
Engineered for High-Power Launches
This kit includes a mix of extra heavy-duty and heavy-duty clutch springs, plus hard-coated aluminum spacers, to increase clutch pressure without creating chatter or sacrificing top-end speed. With shim-adjustable spring tops, you can fine-tune your setup to perfectly match your riding style and application.
Our springs are made from valve-spring quality steel, shot-peened and stress-relieved to withstand the extreme heat and stress of drag-style launches—ensuring consistent performance 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
- Black oxide finish with engraved Brock’s Performance logo
- Click here to view Installation Instructions
KIT INCLUDES
- (1) Clutch Mod
- (3) Extra Heavy Duty Clutch Springs
- (3) Heavy Duty Clutch Springs
- (3) Hard Coated Aluminum Spacers 0.180 Thick
- (3) Spring Base Washers
- (6) Shim Adjustable Spring Tops
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. Please review our Terms and Conditions for more details.
