KIBBLEWHITE Valve Spring Kit 20-21100

Valve springs are critical to engine reliability—worn or inadequate springs lead to valve float, loss of compression, and catastrophic engine damage at high RPMs. The KIBBLEWHITE 20-21100 kit restores OE performance specifications with superior materials and precise engineering, ensuring consistent valve control whether you're rebuilding a stock engine or maintaining a race-proven platform. This is a straightforward bolt-on replacement that demands no guesswork.

KIBBLEWHITE has engineered this kit with dual chrome silicon springs that resist fatigue and maintain consistent spring rate across extended service intervals. The heat-treated steel base washers distribute load evenly, preventing premature wear on the cylinder head, while the included steel retainers handle sustained high-lift applications. Made in the USA, this kit delivers the durability serious mechanics expect.

• Dual chrome silicon springs
• Heat-treated steel base washers
• .415" maximum valve lift
• Steel retainers included
• OE-style replacement kit
• Bolt-on installation
• Made in the U.S.A.
• MPN: 20-21100