{"product_id":"yamaha-yfz450-ported-cylinder-head-kibblewhite-valves","title":"YFZ450 Carb Model Ported +1 Valves Cylinder Head Assembly Assembled Kibblewhite!","description":"\u003cp style=\"text-align: center;\"\u003e\u003cspan style=\"font-size: 0.000000px; color: transparent;\"\u003eUpgrade your Yamaha YFZ450 carb engine with a ported cylinder head featuring Kibblewhite +1 valves and titanium springs for improved airflow and performance. \u003c\/span\u003e\u003c\/p\u003e\u003cdiv style=\"max-width:800px;margin:0 auto;font-family:Arial,Helvetica,sans-serif;line-height:1.5;color:#222;\"\u003e \u003ch2 style=\"text-align:center;font-size:26px;margin:0 0 12px 0;\"\u003e \u003cstrong\u003eYamaha YFZ450 Carb Ported Cylinder Head +1 Valves Kibblewhite Assembled OEM\u003c\/strong\u003e \u003c\/h2\u003e \u003ch3 style=\"color:#c00;margin:20px 0 6px;text-align:center;\"\u003e📖 Product Description\u003c\/h3\u003e \u003cp style=\"text-align:center;margin:0 20px;\"\u003e \u003cspan style=\"font-size:16px;\"\u003e Take your \u003cstrong\u003eYamaha YFZ450 carb model\u003c\/strong\u003e to the next level with this fully built \u003cstrong\u003eported cylinder head assembly\u003c\/strong\u003e, engineered for serious performance gains. Starting with a \u003cstrong\u003eGenuine Yamaha OEM cylinder head\u003c\/strong\u003e, this unit has been professionally \u003cstrong\u003ecleaned, inspected, and sandblasted\u003c\/strong\u003e before undergoing a complete \u003cstrong\u003erace port and polish\u003c\/strong\u003e process. \u003c\/span\u003e \u003c\/p\u003e\n\u003cp style=\"text-align:center;margin:0 20px;\"\u003e\u003cspan style=\"font-size:16px;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp style=\"text-align:center;margin:0 20px;\"\u003e \u003cspan style=\"font-size:16px;\"\u003e Featuring \u003cstrong\u003eKibblewhite +1mm stainless steel valves\u003c\/strong\u003e, a \u003cstrong\u003etitanium valve spring kit\u003c\/strong\u003e, and precision-machined valve seats and guides, this head is built for improved airflow, higher RPM stability, and maximum durability. Ideal for both stock rebuilds and high-performance race engines, this assembly is delivered ready for installation (cams and tappets not included). \u003c\/span\u003e \u003c\/p\u003e \u003ch3 style=\"color:#c00;margin:20px 0 6px;text-align:center;\"\u003e🔥 Key Features \u0026amp; Benefits\u003c\/h3\u003e \u003cul\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eFull race port and polish\u003c\/strong\u003e on intake, exhaust, and combustion chamber for maximum airflow\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eKibblewhite +1mm White Diamond stainless valves\u003c\/strong\u003e for increased performance and durability\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eKibblewhite titanium valve spring kit\u003c\/strong\u003e for high RPM stability\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003ePrecision valve guide cutting and pocket porting\u003c\/strong\u003e for oversized valves\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eOEM Yamaha cylinder head base\u003c\/strong\u003e ensures perfect fitment and reliability\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eFully assembled head\u003c\/strong\u003e (excluding cams and tappets)\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eBuilt for stock or high-performance engines\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e \u003c\/ul\u003e \u003cp style=\"text-align:center;margin:10px 20px;\"\u003e \u003cspan style=\"font-size:16px;color:#c00;\"\u003e \u003cstrong\u003e*IMPORTANT BUILD TIME NOTICE*\u003c\/strong\u003e Most cylinder heads are \u003cstrong\u003ebuilt to order\u003c\/strong\u003e to ensure the highest quality and precision. While we occasionally have units in stock, availability is not guaranteed. If you need a head for an upcoming race or deadline, please contact us to confirm current inventory. \u003cstrong\u003eBuild times may vary, and on-time delivery for race events cannot be guaranteed.\u003c\/strong\u003e \u003c\/span\u003e \u003c\/p\u003e \u003ch3 style=\"color:#c00;margin:20px 0 6px;text-align:center;\"\u003e📦 Product Contents\u003c\/h3\u003e \u003cul\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003eOEM Yamaha YFZ450 cylinder head (used, excellent condition)\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003eKibblewhite +1mm stainless steel intake valves\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003eKibblewhite +1mm stainless steel exhaust valves\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003eKibblewhite titanium valve spring kit\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003eKibblewhite valve keepers\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003eKibblewhite Hi-Temp Red Viton valve stem seals\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cstrong\u003eGenuine \u003cspan style=\"color: rgb(255, 0, 0);\"\u003eKPMI \u003c\/span\u003eRED Viton Stem Seals\u003c\/strong\u003e (no bait-and-switch \u003cstrong\u003e\u003cspan style=\"color: rgb(0, 0, 255);\"\u003eblues!\u003c\/span\u003e\u003c\/strong\u003e).\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003eProfessionally ported and polished head assembly\u003c\/span\u003e\u003c\/li\u003e \u003c\/ul\u003e \u003ch3 style=\"color:#c00;margin:20px 0 6px;text-align:center;\"\u003e✅ Compatibility\u003c\/h3\u003e \u003cul\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003eFits all \u003cstrong\u003eYamaha YFZ450 Carb Models\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003eCompatible with OEM part numbers: \u003cstrong\u003e5D3-11102-00-00\u003c\/strong\u003e, \u003cstrong\u003e5TG-11102-10-00\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003eDesigned for carbureted YFZ450 engines (non fuel-injected)\u003c\/span\u003e\u003c\/li\u003e \u003c\/ul\u003e \u003ch3 style=\"color:#c00;margin:20px 0 6px;text-align:center;\"\u003e❓ FAQ\u003c\/h3\u003e \u003cul\u003e \u003cli\u003e \u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Is this cylinder head ready to install?\u003c\/span\u003e \u003cp style=\"text-align:left;margin:0 0 10px 0;\"\u003e \u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, it comes fully assembled. However, \u003cstrong\u003evalve shimming is required\u003c\/strong\u003e and professional installation is recommended.\u003c\/span\u003e \u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Are all components new?\u003c\/span\u003e \u003cp style=\"text-align:left;margin:0 0 10px 0;\"\u003e \u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The \u003cstrong\u003ecylinder head is OEM used\u003c\/strong\u003e, but all internal components including valves, springs, and seals are \u003cstrong\u003ebrand new Kibblewhite parts\u003c\/strong\u003e.\u003c\/span\u003e \u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Does this include cams or tappets?\u003c\/span\u003e \u003cp style=\"text-align:left;margin:0 0 10px 0;\"\u003e \u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eA:\u003c\/strong\u003e No, this listing does \u003cstrong\u003enot include cams or tappets\u003c\/strong\u003e.\u003c\/span\u003e \u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Is this a stock replacement or performance upgrade?\u003c\/span\u003e \u003cp style=\"text-align:left;margin:0 0 10px 0;\"\u003e \u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eA:\u003c\/strong\u003e It is both. It works great for stock rebuilds but is \u003cstrong\u003eoptimized for high-performance and racing applications\u003c\/strong\u003e.\u003c\/span\u003e \u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Are these heads in stock?\u003c\/span\u003e \u003cp style=\"text-align:left;margin:0 0 10px 0;\"\u003e \u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Most units are \u003cstrong\u003ebuilt to order\u003c\/strong\u003e. Contact us if you need one urgently for race timelines.\u003c\/span\u003e \u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003ch3 style=\"color:#c00;margin:20px 0 6px;text-align:center;\"\u003e🌟 Why Buy from BPRATV\u003c\/h3\u003e \u003cp style=\"color: rgb(34, 34, 34); text-align: center;\"\u003e \u003cspan style=\"font-size:16px;\"\u003e At \u003cstrong\u003eBPRATV\u003c\/strong\u003e, our promise is unwavering: \u003cstrong\u003eThe Best Parts. The Best Performance. The Best Price.\u003c\/strong\u003e We specialize in high-performance powersports components trusted by riders and builders who demand reliability and results. Every part is carefully selected for precision, durability, and real-world performance. Trust BPRATV to keep your \u003cstrong\u003eYamaha YFZ450 ATV\u003c\/strong\u003e running at its best, \u003cstrong\u003eevery single time.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp style=\"text-align:center;margin:0 20px;\"\u003e \u003cspan style=\"color:#38761d;font-size:16px;\"\u003e \u003cstrong\u003e\u003cem\u003eUpgrade your YFZ450 with race-proven ported performance — order your cylinder head today!\u003c\/em\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"text-align:center;margin:0 20px;\"\u003e\u003cspan style=\"color:#38761d;font-size:16px;\"\u003e\u003cstrong\u003e\u003cem\u003e\u003cbr\u003e\u003c\/em\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp style=\"text-align:center;\"\u003e \u003cspan style=\"color:#0000ff;font-size:16px;\"\u003e \u003cstrong\u003eBPRATV - The Best Parts. The Best Performance. The Best Price.\u003c\/strong\u003e \u003c\/span\u003e \u003c\/p\u003e \u003cp style=\"text-align:center;\"\u003e \u003cspan style=\"color:#0000ff;font-size:16px;\"\u003e \u003cstrong\u003eBRAPPPPPPPPPP!\u003c\/strong\u003e \u003c\/span\u003e \u003c\/p\u003e \u003cp style=\"text-align:center;font-size:10px;color:#555;margin:20px 0 0px;\"\u003e© BPRATV LLC\u003cbr\u003e\u003cbr\u003e Due to the nature of high performance and racing applications, BPRATV LLC components are sold without express warranty or any implied warranty of merchantability or fitness for a specific purpose. BPRATV LLC shall not, under any circumstances, be liable for any specific, incidental or consequential damages, including, but not limited to, damage, or loss of property or equipment, loss of profits or revenue(s), cost of purchased or replacement goods, or claims of customers of the purpose, which may arise and\/or shall result from sale, installation or use of these parts. Installation of these parts may void vehicle manufacturers warranty coverage and\/or may cause the vehicle to be illegal in some locations.\u003cbr\u003e\u003cbr\u003e This product is exempt from the emission standards and related requirements of 40 C.F.R. §1051 as provided by 40 C.F.R. §1051.620, and California law. This product is sold only for use in connection with EPA-certified, purpose-built, nonroad vehicles used solely for closed-course, nonroad competition\/racing.\u003c\/p\u003e \u003c\/div\u003e \u003c!-- eBay Titles Yamaha YFZ450 Carb Ported Cylinder Head +1 Valves Kibblewhite Assembled OEM YFZ450 Carb Cylinder Head Ported +1 Valves Kibblewhite Titanium Springs OEM Yamaha YFZ450 Ported Head Assembly +1mm Valves Kibblewhite Race Built Carb YFZ450 Carb Engine Cylinder Head Ported Polished +1 Valves Kibblewhite Kit Yamaha YFZ450 Cylinder Head Assembly Ported +1 Valves Kibblewhite Titanium YFZ450 Carb Ported Cylinder Head Kibblewhite Valves Springs Performance Build Yamaha YFZ450 Race Ported Head +1mm Valves Kibblewhite Springs Assembly OEM YFZ450 Carb Cylinder Head Performance Ported +1 Valves Kibblewhite Complete Yamaha YFZ450 Cylinder Head Ported Polished Kibblewhite +1 Valves Assembled YFZ450 Carb Ported Head Assembly +1 Valves Kibblewhite Performance Upgrade eBay Keywords yfz450 cylinder head yfz450 ported head yfz450 kibblewhite valves yfz450 +1 valves yfz450 head assembly yfz450 carb head yfz450 performance head yfz450 race head yfz450 valve spring kit yfz450 engine head SEO Keywords yamaha yfz450 ported cylinder head yfz450 carb performance head assembly yfz450 kibblewhite valve upgrade yfz450 +1mm valve cylinder head yfz450 race ported head yfz450 engine performance upgrades yfz450 head rebuild assembly yfz450 stainless valve upgrade yfz450 titanium spring head kit yfz450 high performance cylinder head Meta Titles Yamaha YFZ450 Ported Cylinder Head +1 Valves Kibblewhite Assembly YFZ450 Carb Cylinder Head Ported +1 Valves Kibblewhite Performance Yamaha YFZ450 Head Assembly Ported Polished Kibblewhite Upgrade YFZ450 Performance Cylinder Head +1mm Valves Kibblewhite Springs Yamaha YFZ450 Race Ported Head Assembly Kibblewhite Valves Kit YFZ450 Cylinder Head Ported Polished +1 Valves Performance Build Yamaha YFZ450 Engine Head Kibblewhite Valve Upgrade Assembly YFZ450 Carb Head Assembly Ported +1mm Valves Kibblewhite Kit Yamaha YFZ450 Cylinder Head Performance Ported Kibblewhite Valves YFZ450 Ported Cylinder Head Assembly Kibblewhite Titanium Springs Meta Descriptions Upgrade your Yamaha YFZ450 carb engine with a ported cylinder head featuring Kibblewhite +1 valves and titanium springs for improved airflow and performance. High performance YFZ450 cylinder head assembly with porting polishing and Kibblewhite valves designed for carb models and racing applications. Yamaha YFZ450 ported head with +1mm stainless valves and titanium springs for increased power durability and airflow performance. Boost your YFZ450 engine with a professionally ported cylinder head and Kibblewhite valve kit built for performance and reliability. YFZ450 carb cylinder head assembly with race porting +1 valves and Kibblewhite springs for maximum engine performance gains. Performance YFZ450 head upgrade featuring ported combustion chamber and Kibblewhite components for racing and high output builds. Yamaha YFZ450 engine head with stainless +1 valves and titanium springs ideal for stock rebuilds and high performance engines. YFZ450 cylinder head ported and polished with premium Kibblewhite valve train components for durability and horsepower gains. Upgrade your carb YFZ450 with a race-ready ported cylinder head assembly built using OEM casting and premium internals. Yamaha YFZ450 performance head with valve upgrades and port work designed for improved throttle response and top end power. SEO URL Handles yamaha-yfz450-ported-cylinder-head-kibblewhite-valves yfz450-carb-head-assembly-performance-ported yfz450-plus-1-valves-cylinder-head-kibblewhite yamaha-yfz450-race-ported-head-assembly yfz450-performance-cylinder-head-kibblewhite-kit --\u003e","brand":"Yamaha OEM","offers":[{"title":"Default Title","offer_id":46136154652869,"sku":"266110288569\/5D3-11102U\/80-80206\/80218\/80214","price":1999.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0593\/1083\/3861\/files\/266110288569-0.jpg?v=1777349935","url":"https:\/\/bpratv.com\/products\/yamaha-yfz450-ported-cylinder-head-kibblewhite-valves","provider":"BPRATV","version":"1.0","type":"link"}