{"product_id":"vertex-wr101-095-complete-engine-rebuild-kit-2002-yamaha-yz250-2-stroke","title":"Vertex WR101-095 Complete Engine Rebuild Kit 2002 Yamaha YZ250 2-Stroke","description":"\u003ch2\u003e\u003cb\u003eVertex WR101-095 Complete Engine Rebuild Kit — 2002 Yamaha YZ250\u003c\/b\u003e\u003c\/h2\u003e\n\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eIs your 2002 Yamaha YZ250 starting to lose compression, or are you hearing an ominous rumble from the bottom end? Don't wait for a catastrophic engine failure to leave you stranded trackside. The Vertex WR101-095 Complete Engine Rebuild Kit is your ultimate \"box of insurance,\" engineered to restore factory-fresh power, crisp throttle response, and absolute reliability to your classic 2-stroke machine. Whether you are prepping for a racing season in Central Florida or freshening up your favorite weekend warrior, this heavy-duty kit completely eliminates the headache of sourcing individual engine internals piece by piece.\u003c\/p\u003e\n\u003cp\u003eThis premium, one-stop engine package combines the industry-leading performance of a standard-compression Vertex piston with the legendary durability of a Hot Rods heavy-duty crankshaft. Every single component—from the transmission bearings down to the water pump seals—is designed to withstand the brutal RPM demands and high-impact stress of modern off-road and motocross riding. Give your YZ250 the precision-matched internal components it deserves and ride with total confidence knowing your engine is built to last.\u003c\/p\u003e\n\u003ch3\u003eTop Features: Vertex Complete Engine Rebuild Kit\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eConvenient One-Stop Shop:\u003c\/b\u003e Packed in a single box containing nearly every critical component required for a complete, professional top and bottom-end engine overhaul.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eVertex Piston Performance:\u003c\/b\u003e Includes a precision-machined, standard compression piston kit complete with premium rings, wrist pin, and clips for factory-spec power output.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eHot Rods Heavy-Duty Crankshaft:\u003c\/b\u003e Features a stock-stroke crankshaft assembled with an ultra-durable wrist pin bearing to handle intense 2-stroke power cycles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eComprehensive Bearing Packages:\u003c\/b\u003e Fully equipped with specialized Hot Rods kits covering main bearings, transmission bearings, and water pump internals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eNatural \u0026amp; Raw Precision Finish:\u003c\/b\u003e All metal internals feature specialized, high-tolerance finishes designed to maximize oil retention and drastically reduce friction inside the crankcase.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003ePlease Note:\u003c\/b\u003e To guarantee flawless performance and prevent catastrophic failure, please verify your machine's exact year, make, and model match the validated fitment parameters below before purchasing.\u003c\/p\u003e\n\u003ch3\u003eFitment List\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; text-align: left;\" border=\"1\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background-color: #f2f2f2;\"\u003e\n\u003cth style=\"padding: 8px;\"\u003eYear Range\u003c\/th\u003e\n\u003cth style=\"padding: 8px;\"\u003eVehicle Brand\u003c\/th\u003e\n\u003cth style=\"padding: 8px;\"\u003eVehicle Model \u0026amp; Sub-Model\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px;\"\u003e2002\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003eYamaha\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003eYZ250 (2-Stroke)\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\u003cb\u003eQ: What components are included in this kit?\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eA:\u003c\/b\u003e This complete kit includes: a premium Hot Rods Crankshaft, a Vertex Piston Kit (Standard Compression Piston, Rings, Pin, and Clips), a Complete Engine Gasket Kit (covering top and bottom end), an Oil Seal Kit, a Main Bearing and Seal Kit, a Water Pump Rebuild Kit, a complete Transmission Bearing Kit (including transmission bearings, output shaft collar, and sprocket lock washer), a Countershaft\/Seal Kit, and a robust Wrist Pin Bearing.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eQ: Do I need to re-jet my carburetor after installing this kit?\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eA:\u003c\/b\u003e Since this kit utilizes a standard compression piston and stock-stroke crankshaft, your factory jetting specs should work perfectly assuming no air leaks are present. However, always inspect your spark plug color after break-in to ensure your air-fuel mixture is optimal for Central Florida's ambient humidity and temperature.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eExpert Pro-Tip:\u003c\/b\u003e When assembling the bottom end, never use a hammer to force the crankcases back together. Use a dedicated crankcase puller\/installer tool to smoothly draw the new Hot Rods crankshaft into the bearings. Don't forget to generously coat the main bearings, wrist pin bearing, and piston skirts with a high-quality 2-stroke assembly oil to prevent dry-start wear during your initial start-up cycle.\u003c\/p\u003e\n\u003ch3\u003eRecommended Pairings:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/search?q=Yamaha+YZ250+Air+Filter\"\u003eShop Yamaha YZ250 High-Flow Air Filters\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/search?q=2-Stroke+Assembly+Oil\"\u003eShop Premium 2-Stroke Assembly Oils\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/search?q=Yamaha+YZ250+Spark+Plug\"\u003eShop NGK Spark Plugs for Yamaha YZ250\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cb\u003eMoto-House MX — Central Florida's Powersports Authority\u003c\/b\u003e\u003cbr\u003eProudly serving riders locally from our shop in Montverde\/Clermont, FL, and shipping nationwide.\u003cbr\u003eHave installation questions? Stop by the shop or reach out to our expert tech team today!\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Vertex","offers":[{"title":"Default Title","offer_id":41227312988243,"sku":"WR101-095","price":761.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1754\/5421\/files\/vertex-complete-engine-rebuild-kit-wrench-rabbit-wr101-095-2002-yamaha-yz250-172243.jpg?v=1735463342","url":"https:\/\/motohousemx.com\/products\/vertex-wr101-095-complete-engine-rebuild-kit-2002-yamaha-yz250-2-stroke","provider":"Moto-House MX","version":"1.0","type":"link"}