{"product_id":"kibblewhite-40-40660-valve-spring-kit-0-415-inch-lift-lightweight-high-lift-racing-for-kawasaki","title":"Kibblewhite Valve Spring Kit, 0.415-Inch Lift, Lightweight High-Lift Racing for Kawasaki (40-40660)","description":"\u003cp\u003eThe Kibblewhite 40-40660 Valve Spring Kit is engineered for Kawasaki racing engines requiring reliable valve control with standard or oversized valves. Designed for high-lift applications up to 0.415 inches, this lightweight racing spring kit supports consistent valvetrain performance under demanding engine speeds and operating conditions.\u003cbr\u003eThe kit includes precision-engineered valve springs and titanium upper collars, with lower collars included where required for the application. Components are selected to provide a complete spring setup for one engine, helping simplify installation and ensuring the necessary spring and collar components are matched for performance-oriented builds.\u003cbr\u003eKibblewhite designs its valve train components for builders who demand dependable fit, controlled spring behavior, and durable operation in competition and high-performance environments. The 40-40660 kit is made in the United States and is intended for use with compatible Kawasaki applications. Verify engine and valve specifications before installation to confirm compatibility.\u003cbr\u003eKeepers are not included and must be supplied separately when required. Professional installation and proper setup checks are recommended, including installed height, spring pressure, coil clearance, retainer fit, and maximum valve lift, to help ensure safe and reliable operation.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eApplication: Designed for compatible Kawasaki racing engines\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eLift Compatibility: Supports valve lift up to 0.415 inches\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 as required for 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\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eManufacturing: Made in the United States\u003c\/li\u003e\u003c\/ul\u003e\r\n\u003cp\u003eShips from Parts Unlimited.\u003c\/p\u003e","brand":"Kibblewhite","offers":[{"title":"Default Title","offer_id":60117928182046,"sku":"40-40660","price":235.67,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1091\/7884\/7518\/files\/55661.png?v=1791117538","url":"https:\/\/shoplepier.com\/products\/kibblewhite-40-40660-valve-spring-kit-0-415-inch-lift-lightweight-high-lift-racing-for-kawasaki","provider":"LEPIER POWERSPORTS","version":"1.0","type":"link"}