{"product_id":"wossner-8220db-piston-kit-ktm-125-sx-xc-husqvarna-tc125-beta-125-rr-gas-gas-mc-125-size-b","title":"Wossner 8220DB Piston Kit - KTM 125 SX\/XC Husqvarna TC125 Beta 125 RR Gas Gas MC 125 Size B","description":"\u003ch3\u003eWossner 8220DB Premium Forged 2-Stroke Piston Kit - Size B\u003c\/h3\u003e\n\n\u003cp\u003eKeep your 125cc engine at peak performance with the Wossner 8220DB Piston Kit. Specifically engineered for modern European 2-strokes including KTM, Husqvarna, Beta, and Gas Gas, this Size B forged kit is the professional choice for restoring \"Factory Quality\" power in seasoned cylinders. At Moto-House MX, we know that small-bore engines require precise tolerances to maintain high-RPM reliability; Wossner’s aerospace-grade forged components provide the exact fitment needed to keep your machine in the hunt.\u003c\/p\u003e\n\n\u003cp\u003eForged from aerospace-grade aluminum alloy, the 8220DB offers superior structural integrity and thermal resistance compared to standard cast pistons. This kit features a permanent skirt coating to minimize internal friction and piston rock, resulting in a quieter engine and smoother power delivery. This Size B piston (53.96mm) is designed for cylinders with a 54.01mm bore, making it the ideal selection for cylinders that have seen standard operational wear and need to regain perfect piston-to-wall clearance.\u003c\/p\u003e\n\n\u003ch3\u003eTop Features: Wossner 8220DB Piston Kit\u003c\/h3\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cb\u003eSize B (53.96mm):\u003c\/b\u003e Precision-engineered for 54.01mm bores to maintain factory-spec tolerances in cylinders with slight wear.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eAerospace Forged Alloy:\u003c\/b\u003e Premium aluminum construction built to withstand the extreme mechanical stress and heat of 125cc racing.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eLow-Friction Skirt Coating:\u003c\/b\u003e Permanent coating reduces wear on cylinder walls and ensures a more efficient break-in period.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eSingle-Ring Performance:\u003c\/b\u003e Optimized for reduced drag and maximum high-RPM efficiency in competitive 2-stroke applications.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eComplete Assembly:\u003c\/b\u003e Kit includes the forged piston, high-performance ring, wrist pin, and clips.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cb\u003eExpert Pro-Tip:\u003c\/b\u003e In the 125cc class, the piston is a critical maintenance item. Size B is the preferred choice for a top-end refresh when your cylinder is still in good condition but has worn slightly beyond the ideal clearance for a Size A piston. When installing the 8220DB, always replace your small-end wrist pin bearing and check your power valve for carbon buildup. Using a fresh top-end gasket kit is essential for maintaining the primary compression needed for maximum throttle response.\u003c\/p\u003e\n\n\u003ch3\u003eFitment List\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"8\" style=\"width: 100%; border-collapse: collapse;\"\u003e\n    \u003cthead\u003e\n        \u003ctr\u003e\n            \u003cth\u003eBrand\u003c\/th\u003e\n            \u003cth\u003eModels\u003c\/th\u003e\n            \u003cth\u003eYear Range\u003c\/th\u003e\n        \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n        \u003ctr\u003e\n            \u003ctd\u003e\u003cb\u003eKTM\u003c\/b\u003e\u003c\/td\u003e\n            \u003ctd\u003e125 SX \/ XC \/ XC-W \/ EXC \/ Six Days\u003c\/td\u003e\n            \u003ctd\u003e2001-2022\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003e\u003cb\u003eHusqvarna\u003c\/b\u003e\u003c\/td\u003e\n            \u003ctd\u003eTC125 \/ TE125 \/ TX 125 \/ Heritage\u003c\/td\u003e\n            \u003ctd\u003e2014-2025\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003e\u003cb\u003eBeta\u003c\/b\u003e\u003c\/td\u003e\n            \u003ctd\u003e125 RR \/ Race Edition \/ X-Pro\u003c\/td\u003e\n            \u003ctd\u003e2018-2026\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003e\u003cb\u003eGas Gas\u003c\/b\u003e\u003c\/td\u003e\n            \u003ctd\u003eMC 125\u003c\/td\u003e\n            \u003ctd\u003e2021-2025\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003e\u003cb\u003eHusaberg\u003c\/b\u003e\u003c\/td\u003e\n            \u003ctd\u003eTE125\u003c\/td\u003e\n            \u003ctd\u003e2012-2014\u003c\/td\u003e\n        \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cb\u003eQ: What is the difference between Size A and Size B?\u003c\/b\u003e\u003cbr\u003e\nA: Size B (53.96mm) is exactly 0.01mm larger than Size A. This slight increase is designed to compensate for the natural, microscopic wear that occurs on a cylinder wall over time, restoring the engine to original factory performance levels.\u003c\/p\u003e\n\n\u003cp\u003e\u003cb\u003eQ: Why choose a forged piston for racing?\u003c\/b\u003e\u003cbr\u003e\nA: Forged pistons are denser and significantly stronger than cast pistons. In high-revving 125cc engines, a forged piston provides better resistance to the mechanical stresses that can cause standard pistons to crack or fail under pressure.\u003c\/p\u003e\n\n\u003cp\u003e\u003cb\u003eQ: Does this kit include the wrist pin bearing?\u003c\/b\u003e\u003cbr\u003e\nA: No, the kit includes the piston, ring, pin, and clips. We highly recommend purchasing a new high-quality small-end bearing separately for every top-end rebuild to ensure reliability.\u003c\/p\u003e\n\n\u003ch3\u003eRecommended Pairings\u003c\/h3\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cb\u003eTop End Gasket Kit:\u003c\/b\u003e Required for a professional, leak-free engine rebuild.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eMotorex Cross Power 2T Oil:\u003c\/b\u003e Premium synthetic protection specifically formulated for high-performance 2-stroke race engines.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eRestore your machine’s power and precision today. Buy now at Moto-House MX!\u003c\/p\u003e\n\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. Stop by our local store in Montverde, FL or enjoy lightning-fast shipping across the USA.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\/\",\n  \"@type\": \"Product\",\n  \"name\": \"Wossner 8220DB Piston Kit\",\n  \"image\": [],\n  \"description\": \"Premium Wossner 8220DB Forged 2-Stroke Piston Kit for KTM, Husqvarna, Beta, and Gas Gas 125cc models. 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