{"product_id":"vertex-wr101-078-engine-rebuild-kit-yamaha-yfz450-moto-house-mx","title":"Vertex Engine Rebuild Kit WR101-078 — Yamaha YFZ450 2004-2005","description":"\u003ch1\u003e\u003cstrong\u003eVertex Engine Rebuild Kit WR101-078 — Yamaha YFZ450 2004-2005\u003c\/strong\u003e\u003c\/h1\u003e\n\u003ch2\u003eProduct Description\u003c\/h2\u003e\n\u003cp\u003eThe Vertex Engine Rebuild Kit WR101-078 is designed to bring your early-model Yamaha YFZ450 back to peak performance. Providing a comprehensive, single-source solution for your engine restoration, this kit contains all the high-quality components required to rebuild your powerplant from the crankshaft up to the cylinder head.\u003c\/p\u003e\n\u003cp\u003eBy bundling essential components like the crankshaft, piston, and a complete suite of bearings and seals, Vertex ensures perfect compatibility and reliability. Whether you are addressing engine wear or performing a full restoration, this kit delivers the precision and durability needed for consistent ATV performance.\u003c\/p\u003e\n\u003ch3\u003eTop Features: Vertex Engine Rebuild Kit\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAll-In-One Restoration:\u003c\/strong\u003e Includes crankshaft, piston kit, engine gasket kit with oil seals, main bearings, and transmission bearings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete Service Set:\u003c\/strong\u003e Contains vital components such as a water pump rebuild kit, countershaft bushing\/seal kit, and cam chain.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM-Grade Quality:\u003c\/strong\u003e Each part is engineered to meet or exceed original equipment specifications for dependable fitment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard Compression:\u003c\/strong\u003e Piston kit designed to restore factory-level power characteristics and long-term engine health.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReliability Focused:\u003c\/strong\u003e Includes counter-balancer bearings (where applicable) for smooth, balanced engine operation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePlease review the detailed compatibility data below to ensure an exact fitment match for your ATV before finalizing your purchase.\u003c\/p\u003e\n\u003ch3\u003eFitment List\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; border: 1px solid #ddd; font-family: Arial, sans-serif;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background-color: #f4f4f4; border-bottom: 2px solid #ddd;\"\u003e\n\u003cth style=\"padding: 12px; text-align: left; border: 1px solid #ddd;\"\u003eYear Range\u003c\/th\u003e\n\u003cth style=\"padding: 12px; text-align: left; border: 1px solid #ddd;\"\u003eVehicle Brand\u003c\/th\u003e\n\u003cth style=\"padding: 12px; text-align: left; border: 1px solid #ddd;\"\u003eVehicle Model\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e2004-2005\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eYamaha\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eYFZ450\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does this kit cover both the top and bottom end of the engine?\u003c\/strong\u003e\u003cbr\u003eA: Yes, the WR101-078 is a complete rebuild kit covering both the bottom end (crankshaft and main bearings) and top end (piston and gaskets) for a thorough restoration.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Are all necessary seals and bearings included?\u003c\/strong\u003e\u003cbr\u003eA: Yes, the kit is all-inclusive, providing main engine bearings, transmission bearings, oil seals, and the water pump rebuild kit to ensure no essential part is left behind.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eExpert Pro-Tip:\u003c\/strong\u003e When rebuilding your YFZ450 engine, ensure that you flush the oil tank and cooler thoroughly. Old debris from a previous engine failure can often hide in the oil lines and quickly damage your new components. Always use a fresh oil filter and high-quality oil to protect your investment during the critical first hours of break-in.\u003c\/p\u003e\n\u003ch3\u003eRecommended Pairings:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/motohousemx.com\/collections\/mx-off-road-motorcycle-tools\"\u003eEssential Off-Road ATV Tools\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/motohousemx.com\/collections\/premium-motorcycle-chemicals-brake-fluid-bike-wash-coolant-chain-lubes\"\u003ePremium ATV Maintenance Chemicals\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAt Moto-House MX, we carry the best brands in motocross and off-road performance. Our team has over 40 years of experience helping riders get more out of their bikes. Every order ships fast from our Central Florida location.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMoto-House MX – Choice of Champions – Clermont \/ Montverde, FL. Central Florida's premier powersports source with lightning-fast worldwide shipping.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Vertex","offers":[{"title":"Default Title","offer_id":41045056061523,"sku":"WR101-078","price":963.01,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1754\/5421\/files\/vertex-complete-engine-rebuild-kit-wrench-rabbit-wr101-078-2004-2005-yamaha-yfz450-338859.jpg?v=1735463352","url":"https:\/\/motohousemx.com\/products\/vertex-wr101-078-engine-rebuild-kit-yamaha-yfz450-moto-house-mx","provider":"Moto-House MX","version":"1.0","type":"link"}