{"product_id":"kibblewhite-30-30640-valve-spring-kit-for-0-440-inch-lift-honda-engines","title":"Kibblewhite Valve Spring Kit for 0.440-Inch Lift Honda Engines (30-30640)","description":"\u003cp\u003eThe Kibblewhite 30-30640 Valve Spring Kit is designed for Honda performance and racing applications requiring reliable valve-train control at up to 0.440-inch lift. This complete kit includes matched valve springs and titanium upper collars engineered to support consistent operation with standard and oversized valves. It is a practical upgrade for builders seeking lightweight, durable components for high-performance engine configurations.\u003cbr\u003eThe spring kit is supplied complete for one engine and includes lower collars where required by the application. Kibblewhite engineers its spring kits for dependable fitment and performance with compatible Honda cylinder head components. The lightweight racing design helps reduce valve-train mass while maintaining the spring control needed for demanding operating conditions.\u003cbr\u003eKeepers are not included, so verify the required keeper style and compatibility before installation. Proper setup should include checking installed height, spring pressure, coil bind clearance, retainer-to-seal clearance, and valve-train geometry according to the engine builder’s specifications. Made in the U.S.A., the Kibblewhite 30-30640 provides a focused valve-spring solution for Honda engines using standard or oversized valves.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eApplication: Designed for compatible Honda performance and racing engines\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eLift Rating: Supports valve lifts up to 0.440 inch\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eKit Contents: Includes valve springs and titanium upper collars\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eLower Collars: Included where required by the application\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eEngine Coverage: Complete spring kit for one engine\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eValve Compatibility: Engineered for standard and oversized valves\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eKeepers: Not included; verify compatibility before installation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eManufacturing: Made in the U.S.A.\u003c\/li\u003e\u003c\/ul\u003e\r\n\u003cp\u003eShips from Parts Unlimited.\u003c\/p\u003e","brand":"Kibblewhite","offers":[{"title":"Default Title","offer_id":60117913403678,"sku":"30-30640","price":222.36,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1091\/7884\/7518\/files\/31727.png?v=1791117033","url":"https:\/\/shoplepier.com\/products\/kibblewhite-30-30640-valve-spring-kit-for-0-440-inch-lift-honda-engines","provider":"LEPIER POWERSPORTS","version":"1.0","type":"link"}