Kibblewhite Valve Spring Kit for Honda, 0.435-Inch Intake Lift and 0.400-Inch Exhaust Lift (30-33600)

Upgrade your Honda valvetrain with the Kibblewhite 30-33600 Valve Spring Kit, engineered for boosted and turbocharged applications. This performance-focused kit is designed to support higher spring rates and greater lift compatibility than stock valve springs, making it a suitable choice for engines equipped with high-performance camshafts. It helps maintain dependable valve control during demanding high-RPM operation.
Feature: High-lift compatibility supports camshafts with up to 0.435-inch intake lift and 0.400-inch exhaust lift. Feature: Increased spring rates improve valvetrain control compared with stock springs. Feature: Dual Cr-Si chromium-silicon alloy springs are designed for strength and consistent performance under high engine speeds. Feature: CNC-machined titanium or heat-treated steel retainers provide durable, precision-engineered support for performance applications. Feature: Compatible with boosted and turbocharged Honda engine setups. Feature: Made in the USA.
The Kibblewhite 30-33600 kit is built for enthusiasts, engine builders, and performance technicians who require reliable spring and retainer components for elevated RPM and high-output applications. Its matched spring and retainer design helps support stable valve operation while accommodating aggressive camshaft profiles. The result is a practical valvetrain upgrade for Honda engines that need more capability than standard components can provide.
Install the kit according to the engine manufacturer’s specifications and verify spring installation height, coil bind clearance, retainer compatibility, and overall valvetrain geometry before operation. Confirm application details for your specific Honda engine and cylinder head configuration to ensure proper fitment and performance.

Features:

• High-lift compatibility for up to 0.435-inch intake lift and 0.400-inch exhaust lift

• Increased spring rates compared with stock springs

• Dual Cr-Si chromium-silicon alloy valve springs

• CNC-machined titanium or heat-treated steel retainers

• Designed for high-RPM valvetrain control

• Compatible with boosted and turbocharged applications

• Made in the USA

Ships from Parts Unlimited.