{"product_id":"yamaha-yfz450r-yfz-450r-x-98mm-99mm-big-bore-top-end-cometic-gasket-kit-usa-made","title":"Yamaha YFZ450R YFZ 450R\/X 98mm 99mm Big Bore Top End Cometic Gasket Kit USA Made","description":"\u003cp style=\"text-align: center;\"\u003e\u003cspan style=\"font-size: 0.000001px; color: transparent;\"\u003eC3279, C3178, C3279-EST, C3178-EST, 2S2-11181-00-00, 2S2-11351-00-00, 4FM-12213-00-00, 3VD-14613-01-0, 3VD-14613-01-00, 3VD-14613-01-00, 33M-12119-00-00, 4SV-12119-00-00, C7908, Seal your big bore or stroker YFZ450R\/X with our USA-made Cometic Top End Gasket Kit. Features a 99mm MLS head gasket for high-compression engines. Fits all fuel-injected models!\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🔥 YFZ450R 98-99mm Big Bore Cometic Top End Gasket Kit C3279 C3178 🔥\u003c\/strong\u003e \u003c\/h2\u003e \u003ch3 style=\"color:#c00;margin:20px 0 6px;text-align:center;\"\u003e🛠️ Unleash Big Bore Power: Seal Your YFZ450R Engine Right with Cometic!\u003c\/h3\u003e \u003cp style=\"text-align:center;\"\u003e\u003cspan style=\"font-size:16px;\"\u003eAre you pushing the limits with a big bore or stroker kit on your Yamaha YFZ450R? This \u003cstrong\u003eCometic Complete Top End Big Bore Gasket Kit\u003c\/strong\u003e is the professional-grade solution to ensure a perfect, leak-free seal. Engineered specifically for high-performance builds, this kit provides the reliability and durability you need when you're running a \u003cstrong\u003e98mm or 99mm cylinder\u003c\/strong\u003e. Trust in Cometic's industry-leading quality to protect your engine's power and performance, whether you're racing or enjoying an aggressive ride.\u003c\/span\u003e\u003c\/p\u003e \u003ch3 style=\"color:#c00;margin:20px 0 6px;text-align:center;\"\u003e✅ Precision-Engineered MLS Gaskets: Unmatched Sealing for High-Compression!\u003c\/h3\u003e \u003cp style=\"text-align:center;\"\u003e\u003cspan style=\"font-size:16px;\"\u003eThis premium kit is designed for uncompromising performance. It features a robust \u003cstrong\u003eMLS (Multi-Layer Steel) Head Gasket\u003c\/strong\u003e with a 99mm bore, perfectly suited for both 98mm \u0026amp; 99mm cylinders. MLS gaskets are renowned for their ability to handle the extreme pressures and temperatures of high-compression, high-performance engines, providing a seal that won't fail when you need it most. This comprehensive top end kit is a must-have for any serious engine builder or enthusiast, ensuring every component is sealed with confidence. All Cometic gaskets are proudly \u003cstrong\u003eMADE IN USA\u003c\/strong\u003e, guaranteeing top-tier quality and craftsmanship.\u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eCometic Complete Top End Big Bore Gasket Kit\u003c\/strong\u003e for a thorough rebuild.\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003eEngineered specifically for \u003cstrong\u003e98mm \u0026amp; 99mm Big Bore \u0026amp; Stroker Kits\u003c\/strong\u003e.\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003eFeatures a durable \u003cstrong\u003eMLS Head Gasket\u003c\/strong\u003e with a 99mm bore.\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003eProudly \u003cstrong\u003eMADE IN USA\u003c\/strong\u003e for superior quality.\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003eReplaces a range of Yamaha OEM part numbers for a seamless fit.\u003c\/span\u003e\u003c\/li\u003e \u003c\/ul\u003e \u003ch3 style=\"color:#c00;margin:20px 0 6px;text-align:center;\"\u003e📦 Wide-Ranging Compatibility: The Perfect Fit for Your Yamaha!\u003c\/h3\u003e \u003cp style=\"text-align:center;\"\u003e\u003cspan style=\"font-size:16px;\"\u003eThis versatile Cometic gasket kit is designed for seamless compatibility with \u003cstrong\u003eYamaha YFZ450R \u0026amp; YFZ450X Fuel Injected Models ONLY\u003c\/strong\u003e, fitting all years from 2009 to 2025. It also extends its fitment to several dirt bike models, including the \u003cstrong\u003eYamaha WR450F (2007-2009, 2011-2015)\u003c\/strong\u003e and \u003cstrong\u003eYamaha YZ450F (2006-2009)\u003c\/strong\u003e. It's crucial to note that this kit \u003cstrong\u003eDoes Not Fit YFZ450 Carbureted Models\u003c\/strong\u003e, even those with an \"R\" sticker. 😂 With Part Nos. C3279 and C3178, this kit provides a direct replacement for multiple Yamaha OEM part numbers, making your big bore rebuild straightforward and reliable.\u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003eFits \u003cstrong\u003eYamaha YFZ450R \u0026amp; YFZ450X Fuel Injected Models ONLY\u003c\/strong\u003e (2009-2025).\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003eAlso fits \u003cstrong\u003eYamaha WR450F\u003c\/strong\u003e (2007-2009, 2011-2015) and \u003cstrong\u003eYZ450F\u003c\/strong\u003e (2006-2009) dirt bikes.\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eDoes Not Fit YFZ450 Carbureted Models\u003c\/strong\u003e.\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"font-size:16px;\"\u003eReplaces Yamaha OEM Part #s: \u003cstrong\u003e2S2-11181-00-00, 2S2-11351-00-00, 4FM-12213-00-00, 3VD-14613-01-00\u003c\/strong\u003e.\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: What is the main advantage of an MLS head gasket?\u003c\/strong\u003e\u003c\/span\u003e \u003cp style=\"text-align:left;margin:0 0 10px 0;\"\u003e\u003cspan style=\"font-size:16px;\"\u003eA: An MLS (Multi-Layer Steel) head gasket provides a stronger, more consistent seal than traditional gaskets, making it ideal for high-compression, big bore applications where a reliable seal is crucial.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e \u003cli\u003e\n\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eQ: What is the bore size of this gasket kit?\u003c\/strong\u003e\u003c\/span\u003e \u003cp style=\"text-align:left;margin:0 0 10px 0;\"\u003e\u003cspan style=\"font-size:16px;\"\u003eA: The head gasket has a 99mm bore, which is \u003cstrong\u003edesigned to fit both 98mm and 99mm big bore cylinders\u003c\/strong\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e \u003cli\u003e\n\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eQ: Does this kit include valve stem seals?\u003c\/strong\u003e\u003c\/span\u003e \u003cp style=\"text-align:left;margin:0 0 10px 0;\"\u003e\u003cspan style=\"font-size:16px;\"\u003eA: No, this kit is specifically a top end gasket kit and does not include valve stem seals. We recommend purchasing them separately if needed for your rebuild.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e \u003cli\u003e\n\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eQ: Is this kit compatible with my YFZ450 Carbureted model?\u003c\/strong\u003e\u003c\/span\u003e \u003cp style=\"text-align:left;margin:0 0 10px 0;\"\u003e\u003cspan style=\"font-size:16px;\"\u003eA: No, this kit is designed exclusively for the fuel-injected YFZ450R and YFZ450X models. Please ensure your ATV is a fuel-injected model before purchasing.\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 Authority for Yamaha Performance! 🌟\u003c\/h3\u003e \u003cp style=\"text-align:center;margin:0 20px;\"\u003e\u003cspan style=\"font-size:16px;\"\u003eAt BPRATV, our promise is unwavering: \u003cstrong\u003eThe Best Parts. The Best Performance. The Best Price.\u003c\/strong\u003e This Cometic Top End Gasket Kit is the \u003cstrong\u003ehighest quality gasket kit at the best price\u003c\/strong\u003e—so you can spend less money and more time riding. Trust BPRATV to deliver the parts you need to keep your Yamaha YFZ450R performing 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=\"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\u003eSeal your big bore build right—upgrade to Cometic with BPRATV 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;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;\"\u003eC3279, C3178, C3279-EST, C3178-EST, 2S2-11181-00-00, 2S2-11351-00-00, 4FM-12213-00-00, 3VD-14613-01-0, 3VD-14613-01-00, 3VD-14613-01-00, 33M-12119-00-00, 4SV-12119-00-00, C7908, Seal your big bore or stroker YFZ450R\/X with our USA-made Cometic Top End Gasket Kit. Features a 99mm MLS head gasket for high-compression engines. Fits all fuel-injected models!\u003c\/span\u003e\u003c\/p\u003e","brand":"Cometic Gaskets","offers":[{"title":"Default Title","offer_id":45100971065541,"sku":"257106418686\/C3178\/C3279\/JT","price":47.34,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0593\/1083\/3861\/files\/21001-k01-m1051-c3068-5ta-11311-12-00yz450yfz450-bpratv-66_3e1c0f2f-6e04-4522-84a0-e5ec53c17bec.png?v=1757809892","url":"https:\/\/bpratv.com\/products\/yamaha-yfz450r-yfz-450r-x-98mm-99mm-big-bore-top-end-cometic-gasket-kit-usa-made","provider":"BPRATV","version":"1.0","type":"link"}