{"product_id":"wossner-8179d050-forged-piston-kit-0-50mm-yamaha-yz250-it250-dt250","title":"WOSSNER 8179D050 Forged Piston Kit +0.50mm Yamaha YZ250 IT250 DT250","description":"\u003ch3\u003ePremium Forged Reliability for Vintage Yamaha 2-Strokes\u003c\/h3\u003e\n\u003cp\u003eBring your classic Yamaha back to its peak performance with the WOSSNER 8179D050 Piston Kit. Engineered specifically for a wide range of vintage 250cc powerhouses—including the YZ250, IT250, and DT250—this forged piston kit is designed to handle the high-heat and high-stress environment of a 2-stroke engine. Unlike standard cast pistons, Wossner uses aerospace-grade aluminum alloy to ensure your engine maintains its integrity during aggressive off-road or adventure touring. Available now at Moto-House MX, this kit is the professional choice for riders who refuse to compromise on top-end quality.\u003c\/p\u003e\n\u003cp\u003eThe technical precision of the 8179D050 lies in its optimized weight-to-strength ratio. Each piston features a permanent skirt coating that reduces internal friction and minimizes \"piston rock,\" resulting in a quieter, more efficient engine. The dual-ring design ensures a superior seal against the cylinder wall, maximizing compression and power delivery across the powerband. This +0.50mm oversize kit is precision-machined in key areas like the crown and skirt wall to provide maximum lightness without sacrificing the durability needed for vintage racing or trail riding.\u003c\/p\u003e\n\u003ch3\u003eTop Features: WOSSNER 8179D050 Piston Kit\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eForged Aerospace Alloy:\u003c\/b\u003e Superior strength and heat resistance compared to cast pistons for long-term engine life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePermanent Skirt Coating:\u003c\/b\u003e Reduces friction and wear, providing a quieter operation and improved performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eDual-Ring Precision:\u003c\/b\u003e High-quality dual-ring setup for maximum compression and efficient heat transfer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eOptimized Machining:\u003c\/b\u003e Engineered for lightness to improve throttle response while maintaining structural rigidity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eComplete Top-End Kit:\u003c\/b\u003e Includes high-performance forged piston, rings, wrist pin, and circlips.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eExpert Pro-Tip\u003c\/h3\u003e\n\u003cp\u003eWhen rebuilding a vintage 2-stroke engine, always check your small-end rod bearing for wear. We recommend replacing the wrist pin bearing alongside this Wossner kit to ensure total top-end reliability.\u003c\/p\u003e\n\u003ch3\u003eFitment List\u003c\/h3\u003e\n\u003ctable cellpadding=\"8\" border=\"1\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eYear Range\u003c\/th\u003e\n\u003cth\u003eVehicle Brand\u003c\/th\u003e\n\u003cth\u003eVehicle Model \u0026amp; Size\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e1978-1980\u003c\/td\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eIT250\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1978-1979\u003c\/td\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eYZ250\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1974-1979\u003c\/td\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eDT250\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1974-1978\u003c\/td\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eTY250\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1973-1975\u003c\/td\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eMX250\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1973\u003c\/td\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eDT3 (250cc)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1972\u003c\/td\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eDT2 (250cc)\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: Is this a standard size or oversize piston?\u003c\/b\u003e\u003cbr\u003eA: This is a +0.50mm oversize piston (70.50mm bore), which requires the cylinder to be bored and honed to the correct clearance.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eQ: What are the benefits of the skirt coating?\u003c\/b\u003e\u003cbr\u003eA: The coating reduces friction during the critical break-in period and throughout the piston's life, preventing scuffing and reducing engine noise.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eQ: Does this kit fit the early DT models?\u003c\/b\u003e\u003cbr\u003eA: Yes, it is specifically designed for the Yamaha DT series from 1972 through 1979 as listed in the fitment guide.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eRecommended Pairings:\u003c\/b\u003e Cometic Top-End Gasket Kits, NGK Spark Plugs, and High-Performance 2-Stroke Oil.\u003c\/p\u003e\n\u003cp\u003eStop by our local store in Montverde, FL or enjoy lightning-fast shipping across the USA.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eMoto-House MX – Choice of Champions\u003c\/b\u003e – is located in Clermont\/Montverde, FL. The Best Motocross\/UTV \u0026amp; ATV Shop in Central Florida.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"WOSSNER","offers":[{"title":"Default Title","offer_id":44496007200851,"sku":"8179D050","price":152.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1754\/5421\/files\/480460.png?v=1776230776","url":"https:\/\/motohousemx.com\/products\/wossner-8179d050-forged-piston-kit-0-50mm-yamaha-yz250-it250-dt250","provider":"Moto-House MX","version":"1.0","type":"link"}