Kibblewhite Valve Spring Kit for 0.445-Inch Lift Kawasaki Applications (40-40100)

The Kibblewhite 40-40100 Valve Spring Kit is engineered for Kawasaki racing and high-performance applications requiring reliable valve control with up to 0.445-inch lift. This lightweight high-lift kit is designed for use with both standard and oversized valves, helping support consistent valvetrain performance during demanding engine operation. Kibblewhite components are manufactured with performance-focused materials and precision engineering for builders who require dependable spring control and durability.
The kit includes matched valve springs and titanium upper collars, with lower collars included where required for the application. Each kit is supplied complete for one engine, simplifying installation and ensuring the essential spring and collar components are packaged together. The lightweight design helps reduce valvetrain mass while maintaining the spring force needed for high-lift racing use.
This Kibblewhite valve spring kit is made in the United States and is intended for professional engine builders, racers, and enthusiasts upgrading Kawasaki cylinder heads. Confirm application compatibility, installed height, spring pressure requirements, and valve-train specifications before installation. Keepers are not included and must be sourced separately when required.

Features:

• Application: Designed for Kawasaki high-performance and racing engines

• Lift Capability: Supports camshaft lift up to 0.445 inch

• Construction: Includes lightweight racing valve springs and titanium upper collars

• Valve Compatibility: Engineered for standard and oversized valves

• Kit Coverage: Complete spring and collar package for one engine

• Lower Collars: Included when required for the application

• Keepers: Not included

• Origin: Made in the United States

Ships from Parts Unlimited.