Extra Heavy Duty Clutch Spring Kit Ninja H2 (16-21), H2 SX (18-21), and Z H2 (20-25)

Built for riders pushing the limits of Kawasaki’s hyperbikes, Brock’s Extra Heavy Duty Clutch Spring Kit is engineered to handle the extreme demands of high-horsepower, drag-style launches. Manufactured from valve-spring quality steel, each spring is shot-peened and stress-relieved to deliver millions of trouble-free, sag-free cycles outlasting and outperforming typical industry clutch springs.

This kit provides increased clamping force for better power transfer, longer clutch life, firmer engagement, and improved MPH, while maintaining compatibility with the OEM slipper clutch. Includes springs, shims, and adjustable tops for fine-tuning lever feel and clutch performance.

FEATURES

• Includes 6 extra heavy duty springs
• Retains full use of OEM slipper clutch
• Extends clutch life and increases MPH
• Eliminates “spongy” lever feel with firmer, more consistent engagement
• Shot-peened, stress-relieved, valve-spring quality steel for maximum durability
• Engineered for millions of cycles—no sagging over time
• Includes shims and adjustable tops for precise tuning
• Click here to view Installation Instructions

FITMENT – IMPORTANT INFORMATION BEFORE ORDERING

• Direct bolt-in replacement for 2015 Kawasaki Ninja H2
• Clutch Conversion Kit (473523) is required for:
• Kawasaki Ninja H2 (2016–2021)
• Kawasaki Ninja H2 SX (2018–2021)
• Kawasaki Ninja Z H2 (2020–2025)

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.