{"product_id":"yfz450-yfz-450-wiseco-12-4-1-piston-95mm-stock-bore-cylinder-top-end-rebuild-kit-1","title":"YFZ450 YFZ 450 Wiseco 12.4 Piston \u0026 95mm Stock Bore Cylinder Top End Rebuild Kit","description":"\u003cp style=\"text-align: center;\"\u003e\u003cspan style=\"font-size: 0.000001px; color: transparent;\"\u003e20001 \/ M1000 \/ C3066,4865M09500,C3066,A-YFZ-95-CG, 20001, M1100, C3066, C3066-EST, 71014-5, 5TA-11311-12-00, 5TG-11631-12-00, CR8EIX, 4865M09500, 4835M09500, 99999-03528-00, 99009-20500-00, 5TG-11633-10-00, 5TG-11603-00-00, 5TA-11181-00-00\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\u003e🔥 Yamaha YFZ450 Wiseco 12.4:1 95mm Stock Bore Top End Rebuild Kit 🔥\u003c\/strong\u003e \u003c\/h2\u003e \u003ch3 style=\"color:#c00;margin:20px 0 6px;text-align:center;\"\u003e💪 Add Amazing \u0026amp; Reliable Power with Wiseco \u0026amp; Cometic Quality\u003c\/h3\u003e \u003cp style=\"text-align:center;\"\u003e\u003cspan style=\"font-size:16px;\"\u003eRevive your \u003cstrong\u003eYamaha YFZ450 Carb Models (2004–2009, 2012–2013)\u003c\/strong\u003e with this \u003cstrong\u003eComplete Top End Rebuild Kit\u003c\/strong\u003e. Featuring a \u003cstrong\u003eWiseco 12.4:1 forged piston\u003c\/strong\u003e, \u003cstrong\u003eBPRATV Nikasil-plated cylinder\u003c\/strong\u003e, and \u003cstrong\u003eCometic gaskets\u003c\/strong\u003e, this package is built to deliver crisp throttle response, long-lasting durability, and race-ready performance. Includes everything you need for a professional-grade rebuild — all brand new, with warranty support.\u003c\/span\u003e\u003c\/p\u003e \u003ch3 style=\"color:#c00;margin:20px 0 6px;text-align:center;\"\u003e⚡ Premium Components for Maximum Performance\u003c\/h3\u003e \u003cp style=\"text-align:center;\"\u003e\u003cspan style=\"font-size:16px;\"\u003eThis all-in-one rebuild kit includes only the highest quality components from the most trusted names in the industry, ensuring your YFZ450 runs stronger and longer. Forget piecing together parts — this kit is designed to save you time and guarantee results.\u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003e🏆 \u003cstrong\u003e95mm BPRATV Nikasil Plated Cylinder\u003c\/strong\u003e – Stock bore, 1-year warranty.\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003e🔥 \u003cstrong\u003eWiseco 12.4:1 Piston Kit\u003c\/strong\u003e – Includes piston, rings, pin \u0026amp; clips.\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003e🛡️ \u003cstrong\u003eCometic Complete Top End Gasket Kit\u003c\/strong\u003e – Industry-leading sealing performance.\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003e🔴 \u003cstrong\u003eKibblewhite Red Viton Valve Stem Seals\u003c\/strong\u003e – Set of 5 for superior oil control.\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003e⚡ \u003cstrong\u003eNGK Iridium Spark Plug\u003c\/strong\u003e – High-performance ignition every time.\u003c\/span\u003e\u003c\/li\u003e \u003c\/ul\u003e \u003ch3 style=\"color:#c00;margin:20px 0 6px;text-align:center;\"\u003e✅ Perfect Fit for Yamaha YFZ450 Carbureted Models\u003c\/h3\u003e \u003cp style=\"text-align:center;\"\u003e\u003cspan style=\"font-size:16px;\"\u003eDesigned for \u003cstrong\u003edirect bolt-on installation\u003c\/strong\u003e, this kit is compatible with stock stroke YFZ450 engines. No machining required — just reliable performance and lasting durability. Replaces OEM parts with precision-engineered upgrades you can trust.\u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003eFits \u003cstrong\u003eYamaha YFZ450 Carb Models\u003c\/strong\u003e – 2004–2009, 2012–2013.\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003eDirect OEM replacement – no modifications needed.\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003e12.4:1 compression ratio – runs on pump or race gas.\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003eBuilt for racing or trail reliability.\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003eAll components brand new, warranty included.\u003c\/span\u003e\u003c\/li\u003e \u003c\/ul\u003e \u003ch3 style=\"color:#c00;margin:20px 0 6px;text-align:center;\"\u003e❓ Frequently Asked Questions (FAQ)\u003c\/h3\u003e \u003cul\u003e \u003cli\u003e\n\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eQ: Will this fit fuel-injected YFZ450R models?\u003c\/strong\u003e\u003c\/span\u003e \u003cp style=\"text-align:left;margin:0 0 10px 0;\"\u003e\u003cspan style=\"font-size:16px;\"\u003eNo – this kit is for carbureted YFZ450 models only (2004–2009, 2012–2013).\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e \u003cli\u003e\n\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eQ: Do I need machining to install this?\u003c\/strong\u003e\u003c\/span\u003e \u003cp style=\"text-align:left;margin:0 0 10px 0;\"\u003e\u003cspan style=\"font-size:16px;\"\u003eNo – the kit is designed for a direct bolt-on installation without machining.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e \u003cli\u003e\n\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eQ: What fuel should I use with the 12.4:1 piston?\u003c\/strong\u003e\u003c\/span\u003e \u003cp style=\"text-align:left;margin:0 0 10px 0;\"\u003e\u003cspan style=\"font-size:16px;\"\u003eThis piston is pump-gas friendly but also works great with race fuel for maximum performance.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e \u003cli\u003e\n\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eQ: Are all parts new and covered by warranty?\u003c\/strong\u003e\u003c\/span\u003e \u003cp style=\"text-align:left;margin:0 0 10px 0;\"\u003e\u003cspan style=\"font-size:16px;\"\u003eYes – everything is brand new in original packaging and backed by manufacturer warranties.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e \u003c\/ul\u003e \u003ch3 style=\"color:#c00;margin:20px 0 6px;text-align:center;\"\u003e🌟 Why Buy from BPRATV? Your YFZ450 Performance Experts 🌟\u003c\/h3\u003e \u003cp style=\"text-align:center;margin:0 20px;\"\u003e\u003cspan style=\"font-size:16px;\"\u003eAt BPRATV, we live by our motto: \u003cstrong\u003eThe Best Parts. The Best Performance. The Best Price.\u003c\/strong\u003e This Wiseco Top End Kit delivers unbeatable performance and durability while saving you money compared to OEM. Whether you race, trail ride, or just want to restore factory-level power, this kit is your best option.\u003c\/span\u003e\u003c\/p\u003e \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=\"color:#38761d;font-size:16px;\"\u003e\u003cstrong\u003e\u003cem\u003eUpgrade your YFZ450 today with Wiseco reliability and power! 🏁\u003c\/em\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \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=\"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;margin:0 20px;\"\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\u003c\/p\u003e \u003c\/div\u003e \u003cp style=\"text-align: center;\"\u003e\u003cspan style=\"font-size: 0.000001px; color: transparent;\"\u003e20001 \/ M1000 \/ C3066,4865M09500,C3066,A-YFZ-95-CG, 20001, M1100, C3066, C3066-EST, 71014-5, 5TA-11311-12-00, 5TG-11631-12-00, CR8EIX, 4865M09500, 4835M09500, 99999-03528-00, 99009-20500-00, 5TG-11633-10-00, 5TG-11603-00-00, 5TA-11181-00-00\u003c\/span\u003e\u003c\/p\u003e","brand":"BPRATV","offers":[{"title":"Default Title","offer_id":45062122700997,"sku":"286467396355\/20001\/4835M09500\/C3066\/71014\/JT","price":438.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0593\/1083\/3861\/files\/yamahayfz450topendrebuildkitsimplesafe-2_a0de8701-d0eb-4dc8-9184-6004f07a099b.png?v=1756787234","url":"https:\/\/bpratv.com\/products\/yfz450-yfz-450-wiseco-12-4-1-piston-95mm-stock-bore-cylinder-top-end-rebuild-kit-1","provider":"BPRATV","version":"1.0","type":"link"}