Kibblewhite Valve Spring Kit, 0.400 to 0.465 in. Lift, Lightweight High-Lift Racing, Honda (30-30015)

The Kibblewhite Valve Spring Kit, Part Number 30-30015, is designed for Honda racing and high-performance applications requiring reliable valve control across a lift range of 0.400 to 0.465 inches. This lightweight spring kit supports demanding engine builds while helping maintain consistent valvetrain performance at elevated engine speeds.
The kit includes matched valve springs and titanium upper collars, with lower collars included where required for the application. Kibblewhite engineers these spring kits for compatibility with both standard and oversized valves, making the 30-30015 kit a practical choice for performance cylinder head upgrades and racing engine assemblies.
Each kit is supplied complete for one engine. Valve keepers are not included and should be selected separately to match the cylinder head, valve, and retainer configuration. Carefully verify application requirements, installed height, and valve lift before installation to ensure proper spring setup and dependable operation.
Made in the U.S.A., the Kibblewhite 30-30015 Valve Spring Kit combines lightweight components with application-focused engineering for Honda engines requiring high-lift racing valve springs. It is intended for builders and technicians seeking a complete spring and collar package without unnecessary components.

Features:

• Designed for 0.400 to 0.465 inches of valve lift

• Lightweight high-lift racing valve spring kit

• Includes valve springs and titanium upper collars

• Lower collars included as required for the application

• Engineered for standard and oversized valves

• Complete kit for one engine

• Valve keepers are not included

• Made in the U.S.A.

Ships from Parts Unlimited.