SPRING VALVE KIT, XR500/600, KIBBLEWHITE 30-4081, 460 LIFT

This high-performance valve spring-only kit is designed for various Honda® motorcycle applications, supporting up to 0.465″ valve lift. Engineered using advanced design and simulation software, the springs are manufactured from premium chrome-silicon wire, providing excellent fatigue life, stress tolerance, and consistent performance. This kit is suitable for both intake and exhaust applications and is compatible with a wide range of off-road and dual-sport models.

Features

• Designed for high-performance applications with 0.465″ valve lift capacity

• Manufactured from Super-Clean Chrome-Silicon wire from Kobe, Japan

• Engineered using proprietary design and simulation software

• Undergoes heat treatment, stress relief, and shot peening for durability

• Manufactured in ISO-certified U.S. facilities

• Suitable for both intake and exhaust valves

Specifications

• Valve Lift: 0.465″

• Installed Height: 1.210″

• Seat Pressure: 75#

• Open Pressure: 210# @ 0.465″ lift

• Type: Intake / Exhaust

• Material: Various

Cross-Reference OEM Part Numbers

• Kibblewhite Part No. 30-4081

Vehicle Fitments

• Honda GB500 1989–1990

• Honda XR500R 1983–1984

• Honda XL600R 1983–1987

• Honda XR600R 1985–2000

• Honda XR650L 1993–2018