{"product_id":"wossner-8175d100-forged-piston-kit-1-00mm-yamaha-ytz250-it250-2-stroke","title":"WOSSNER 8175D100 Forged Piston Kit +1.00mm Yamaha YTZ250 IT250 2-Stroke","description":"\u003ch3\u003eHigh-Performance Forged Power for Vintage Yamaha 2-Strokes\u003c\/h3\u003e\n\u003cp\u003eRestore the heart of your engine with the precision engineering of the WOSSNER 8175D100 Piston Kit. Designed specifically for the legendary Yamaha YTZ250 Tri-Z and IT250, this kit is the ultimate solution for riders looking to regain lost compression and improve throttle response. Wossner pistons are forged from aerospace-grade aluminum alloy, offering superior strength-to-weight ratios compared to cast alternatives. Whether you are hitting the trails or restoring a classic, this kit from Moto-House MX ensures your 2-stroke runs cooler, quieter, and more reliably than ever before.\u003c\/p\u003e\n\u003cp\u003eTechnical excellence is built into every cross-section of this forged piston. The 8175D100 features a high-quality, permanent skirt coating that significantly reduces friction and piston rock, resulting in a quieter engine and extended cylinder life. Optimized machining ensures maximum lightness for rapid RPM gains without compromising the structural integrity of the crown or skirt walls. This dual-ring, +1.00mm oversize kit comes complete with the piston, high-tension rings, pin, and clips, providing everything you need for a professional-grade top-end rebuild.\u003c\/p\u003e\n\u003ch3\u003eTop Features: WOSSNER 8175D100 Piston Kit\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eAerospace-Grade Forging:\u003c\/b\u003e Forged from premium aluminum alloy for maximum durability under high-heat 2-stroke conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePermanent Skirt Coating:\u003c\/b\u003e Reduces friction and internal wear for improved performance and a quieter engine.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eOptimized Lightness:\u003c\/b\u003e Precision-machined to shed weight while maintaining critical strength in the crown and walls.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eDual-Ring Design:\u003c\/b\u003e Provides superior sealing and heat transfer for consistent power throughout the RPM range.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eComplete Rebuild Kit:\u003c\/b\u003e Includes forged piston, rings, wrist pin, and circlips for a seamless installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eExpert Pro-Tip\u003c\/h3\u003e\n\u003cp\u003eWhen installing a +1.00mm oversize piston, always verify your cylinder bore clearance and ensure the ring end gap is set to Wossner's specific tolerances to prevent seizure during the initial heat cycle.\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\u003e1985-1986\u003c\/td\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eYTZ250 Tri-Z\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1983\u003c\/td\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eIT250\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 piston an oversize or standard replacement?\u003c\/b\u003e\u003cbr\u003eA: This is a +1.00mm oversize piston (69.00mm bore), requiring your cylinder to be bored to match.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eQ: Why is a forged piston better than a cast one?\u003c\/b\u003e\u003cbr\u003eA: Forged pistons are denser and stronger, making them much more resistant to cracking or shattering under high-performance 2-stroke stress.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eQ: Does the skirt coating wear off quickly?\u003c\/b\u003e\u003cbr\u003eA: No, Wossner uses a permanent coating process designed to last the life of the piston to maintain reduced friction levels.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eRecommended Pairings:\u003c\/b\u003e Top-End Gasket Kits, 2-Stroke Premix Oil, and Spark Plugs.\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":44496007233619,"sku":"8175D100","price":152.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1754\/5421\/files\/480455.png?v=1776230784","url":"https:\/\/motohousemx.com\/products\/wossner-8175d100-forged-piston-kit-1-00mm-yamaha-ytz250-it250-2-stroke","provider":"Moto-House MX","version":"1.0","type":"link"}