{"product_id":"kibblewhite-racing-valve-spring-kit-yamaha-yfz450r-x-wr450f-yz450f","title":"Kibblewhite Racing Valve Spring Kit Yamaha YFZ450R\/X WR450F YZ450F (2003-2023)","description":"\u003ch1 data-start=\"168\" data-end=\"263\"\u003eKibblewhite Lightweight Racing Valve Spring Kit – Yamaha YFZ450 \/ YFZ450R\/X \/ WR450F \/ YZ450F\u003c\/h1\u003e\n\u003cp data-start=\"265\" data-end=\"750\"\u003e🛠️ \u003cstrong data-start=\"269\" data-end=\"284\"\u003eDescription\u003c\/strong\u003e\u003cbr data-start=\"284\" data-end=\"287\"\u003eHandle high-RPM performance and big lift cams with confidence using the Kibblewhite Lightweight Racing Valve Spring Kit. Engineered from premium chromium-silicon alloy with CNC-machined titanium and heat-treated steel retainers, this kit provides the valvetrain stability needed for aggressive camshafts, turbocharged builds, and high-compression setups. Built in the USA, it ensures consistent pressure, reduced float, and reliable sealing under extreme loads.\u003c\/p\u003e\n\u003chr data-start=\"752\" data-end=\"755\"\u003e\n\u003cp data-start=\"757\" data-end=\"780\"\u003e✅ \u003cstrong data-start=\"759\" data-end=\"778\"\u003eWhat’s Included\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"781\" data-end=\"1044\"\u003e\n\u003cli data-start=\"781\" data-end=\"813\"\u003e\n\u003cp data-start=\"783\" data-end=\"813\"\u003e3x Intake Titanium Retainers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"814\" data-end=\"847\"\u003e\n\u003cp data-start=\"816\" data-end=\"847\"\u003e2x Exhaust Titanium Retainers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"848\" data-end=\"880\"\u003e\n\u003cp data-start=\"850\" data-end=\"880\"\u003e3x Intake CrSi Valve Springs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"881\" data-end=\"914\"\u003e\n\u003cp data-start=\"883\" data-end=\"914\"\u003e2x Exhaust CrSi Valve Springs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"915\" data-end=\"951\"\u003e\n\u003cp data-start=\"917\" data-end=\"951\"\u003e3x Intake H.T. Steel Basewashers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"952\" data-end=\"989\"\u003e\n\u003cp data-start=\"954\" data-end=\"989\"\u003e2x Exhaust H.T. Steel Basewashers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"990\" data-end=\"1016\"\u003e\n\u003cp data-start=\"992\" data-end=\"1016\"\u003e3x Intake Viton® Seals\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1017\" data-end=\"1044\"\u003e\n\u003cp data-start=\"1019\" data-end=\"1044\"\u003e2x Exhaust Viton® Seals\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1046\" data-end=\"1049\"\u003e\n\u003cp data-start=\"1051\" data-end=\"1067\"\u003e📦 \u003cstrong data-start=\"1054\" data-end=\"1065\"\u003eFitment\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1068\" data-end=\"1275\"\u003e\n\u003cli data-start=\"1068\" data-end=\"1099\"\u003e\n\u003cp data-start=\"1070\" data-end=\"1099\"\u003e2010–2023 Yamaha YFZ450R SE\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1100\" data-end=\"1128\"\u003e\n\u003cp data-start=\"1102\" data-end=\"1128\"\u003e2010–2011 Yamaha YFZ450X\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1129\" data-end=\"1157\"\u003e\n\u003cp data-start=\"1131\" data-end=\"1157\"\u003e2009–2023 Yamaha YFZ450R\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1158\" data-end=\"1191\"\u003e\n\u003cp data-start=\"1160\" data-end=\"1191\"\u003e2008–2009 Yamaha YFZ450 X 4x2\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1192\" data-end=\"1219\"\u003e\n\u003cp data-start=\"1194\" data-end=\"1219\"\u003e2004–2009 Yamaha YFZ450\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1220\" data-end=\"1247\"\u003e\n\u003cp data-start=\"1222\" data-end=\"1247\"\u003e2003–2015 Yamaha WR450F\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1248\" data-end=\"1275\"\u003e\n\u003cp data-start=\"1250\" data-end=\"1275\"\u003e2003–2009 Yamaha YZ450F\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1277\" data-end=\"1280\"\u003e\n\u003cp data-start=\"1282\" data-end=\"1553\"\u003e🛡️ \u003cstrong data-start=\"1286\" data-end=\"1303\"\u003eWarranty Info\u003c\/strong\u003e\u003cbr data-start=\"1303\" data-end=\"1306\"\u003eKibblewhite valve train components are backed by a limited manufacturer’s warranty against defects in materials and workmanship. Warranty does not cover race damage, improper installation, or tuning errors. Professional installation recommended.\u003c\/p\u003e\n\u003chr data-start=\"1555\" data-end=\"1558\"\u003e\n\u003cp data-start=\"1560\" data-end=\"1581\"\u003e🔑 \u003cstrong data-start=\"1563\" data-end=\"1579\"\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1582\" data-end=\"1949\"\u003e\n\u003cli data-start=\"1582\" data-end=\"1631\"\u003e\n\u003cp data-start=\"1584\" data-end=\"1631\"\u003eDesigned for high-lift camshafts up to 0.380\"\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1632\" data-end=\"1684\"\u003e\n\u003cp data-start=\"1634\" data-end=\"1684\"\u003eCompatible with turbocharged and boosted engines\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1685\" data-end=\"1743\"\u003e\n\u003cp data-start=\"1687\" data-end=\"1743\"\u003eCNC-machined titanium and heat-treated steel retainers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1744\" data-end=\"1815\"\u003e\n\u003cp data-start=\"1746\" data-end=\"1815\"\u003eChromium-silicon alloy dual springs for superior fatigue resistance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1816\" data-end=\"1865\"\u003e\n\u003cp data-start=\"1818\" data-end=\"1865\"\u003eSpring pressures: 39 lb (seat) \/ 86 lb (open)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1866\" data-end=\"1929\"\u003e\n\u003cp data-start=\"1868\" data-end=\"1929\"\u003eLightweight racing design ensures reliable high-RPM control\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1930\" data-end=\"1949\"\u003e\n\u003cp data-start=\"1932\" data-end=\"1949\"\u003eMade in the USA\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Parts Unlimited","offers":[{"title":"Default Title","offer_id":46840356012257,"sku":"0926-0095","price":317.71,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1219\/2993\/files\/kibblewhite-racing-valve-spring-kit-yamaha-yfz450rx-wr450f-yz450f-2728220.jpg?v=1763567839","url":"https:\/\/dunegoonshop.com\/products\/kibblewhite-racing-valve-spring-kit-yamaha-yfz450r-x-wr450f-yz450f","provider":"Dune Goons","version":"1.0","type":"link"}