{"product_id":"wossner-8324db-piston-kit-2022-2026-beta-300-rr-race-edition-xtrainer-standard-size-b","title":"Wossner 8324DB - 2022-2026 Beta 300 RR Race Edition Xtrainer Standard Size B","description":"\u003ch3\u003eWossner 8324DB Standard Series Forged 2-Stroke Piston Kit - Standard Size B\u003c\/h3\u003e\n\n\u003cp\u003eMaintain the peak performance of your Italian enduro machine with the Wossner 8324DB Piston Kit. Tailored specifically for the Beta 300cc 2-stroke engine found in the 300 RR, Race Edition, X-Pro, and Xtrainer (2022-2026), the \"Size B\" piston is the professional's choice for engines that have completed several seasons of riding. At Moto-House MX, we understand that as a 300cc cylinder wears, factory \"Size A\" clearances can become too loose; this +0.01mm Size B kit provides the precise fitment needed to restore compression and eliminate piston slap in slightly worn bores.\u003c\/p\u003e\n\n\u003cp\u003eForged from high-grade aerospace aluminum alloy, the 8324DB is built to withstand the grueling demands of hard enduro and technical trail riding. This kit features a dual-ring design, offering superior secondary compression and improved heat transfer to the cylinder wall, which helps maintain consistent power throughout long, difficult rides. To ensure longevity, Wossner applies a permanent molybdenum disulphide skirt coating that reduces friction and protects the cylinder during high-stress operation. With optimized machining for a perfect strength-to-weight ratio, this 72.96mm piston ensures your Beta retains its legendary lugging ability while gaining the durability of a forged component.\u003c\/p\u003e\n\n\u003ch3\u003eTop Features: Wossner 8324DB Piston Kit\u003c\/h3\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cb\u003eStandard Size B (72.96mm):\u003c\/b\u003e Specifically designed for 73.01mm bores, providing a tighter fit for cylinders with slight wear to restore peak performance.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eDual Ring Configuration:\u003c\/b\u003e Enhances cylinder sealing and cooling, ensuring consistent torque delivery for demanding off-road racers.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eAerospace-Grade Forging:\u003c\/b\u003e Offers superior structural integrity compared to stock cast pistons, significantly reducing the risk of fatigue failure.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eLow-Friction Skirt Coating:\u003c\/b\u003e Permanent coating reduces internal drag and piston rock for a quieter running engine and longer service life.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003ePrecision Lightness:\u003c\/b\u003e Engineered to minimize reciprocating mass, allowing the engine to rev freely and respond instantly to rider input.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eComplete Top-End Kit:\u003c\/b\u003e Includes the forged Size B piston, performance rings, wrist pin, and circlips.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cb\u003eExpert Pro-Tip:\u003c\/b\u003e When your Beta 300 has seen significant hours on the trail, the cylinder bore often grows by a fraction of a millimeter. Stepping up to a Wossner Size B (72.96mm) is the standard practice for professional mechanics to bring the piston-to-wall clearance back to ideal specifications without needing a full replate. Always measure your cylinder with a precision bore gauge to confirm that 73.01mm is your current size. For the best results, install with a fresh top-end gasket kit and use premium 2-stroke oil to protect your investment.\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\u003eYear Range\u003c\/th\u003e\n            \u003cth\u003eVehicle Brand\u003c\/th\u003e\n            \u003cth\u003eVehicle Model\u003c\/th\u003e\n        \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n        \u003ctr\u003e\n            \u003ctd\u003e2022-2024\u003c\/td\u003e\n            \u003ctd\u003eBeta\u003c\/td\u003e\n            \u003ctd\u003e300 RR\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003e2022-2025\u003c\/td\u003e\n            \u003ctd\u003eBeta\u003c\/td\u003e\n            \u003ctd\u003e300 RR - Race Edition\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003e2025-2026\u003c\/td\u003e\n            \u003ctd\u003eBeta\u003c\/td\u003e\n            \u003ctd\u003e300 RR X-Pro\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003e2022-2025\u003c\/td\u003e\n            \u003ctd\u003eBeta\u003c\/td\u003e\n            \u003ctd\u003e300 Xtrainer\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: When should I use a Size B piston instead of Size A?\u003c\/b\u003e\u003cbr\u003e\nA: Size B (72.96mm) is used when your cylinder has minor wear. If your standard 73.00mm bore has increased slightly toward 73.01mm, the Size B provides the correct clearance to prevent power loss and excessive piston movement.\u003c\/p\u003e\n\n\u003cp\u003e\u003cb\u003eQ: Does this kit work for the 2025 Xtrainer?\u003c\/b\u003e\u003cbr\u003e\nA: Yes, this kit is compatible with the 300cc Xtrainer models through 2025, as well as the RR and Race Edition models within the specified year range.\u003c\/p\u003e\n\n\u003cp\u003e\u003cb\u003eQ: Why choose a dual ring piston for the Beta 300?\u003c\/b\u003e\u003cbr\u003e\nA: The dual ring setup is ideal for enduro and trail riding, as it provides better sealing at lower RPMs and improves heat dissipation, leading to a longer-lasting top end.\u003c\/p\u003e\n\n\u003ch3\u003eRecommended Pairings\u003c\/h3\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cb\u003eComplete Top End Gasket Set:\u003c\/b\u003e Essential for maintaining proper squish clearance and a leak-free seal.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eMotul 800 2T Factory Line:\u003c\/b\u003e High-performance lubricant to ensure your forged piston remains protected in extreme enduro conditions.\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 8324DB Piston Kit\",\n  \"image\": [],\n  \"description\": \"Premium Wossner 8324DB Forged 2-Stroke Dual Ring Piston Kit for 2022-2026 Beta 300 RR, Race Edition, and Xtrainer. 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