{"product_id":"wossner-8587dc-piston-kit-2004-2017-honda-crf250x-2004-2005-crf250r-size-c","title":"Wossner 8587DC Piston Kit - 2004-2017 Honda CRF250X \/ 2004-2005 CRF250R Size C","description":"\u003ch3\u003eWossner 8587DC Premium Series Forged 4-Stroke Piston Kit - Size C\u003c\/h3\u003e\n\n\u003cp\u003eRevitalize your Honda’s Unicam engine with the Wossner 8587DC Piston Kit. Specifically engineered for the versatile 2004-2017 Honda CRF250X and the 2004-2005 CRF250R, this Premium Series forged kit is the professional choice for restoring \"Factory Quality\" power in cylinders that have seen extended service. At Moto-House MX, we know that 250cc 4-strokes demand precision to maintain their high-revving nature; Wossner’s aerospace-grade forged components provide the exact fitment needed to keep your Honda reliable on the trail or the track.\u003c\/p\u003e\n\n\u003cp\u003eForged from aerospace-grade aluminum alloy, the 8587DC maintains a performance-oriented 12.9:1 compression ratio, offering a crisp throttle response and strong mid-range pull. This piston features advanced radial boss machining and enhanced oiling slots for superior wrist pin lubrication—a critical upgrade for the thermal demands of a 250cc racing engine. The permanent skirt coating minimizes internal friction and piston rock, resulting in a quieter engine and a more controlled break-in. This Size C piston (77.97mm) is precision-matched for 78.02mm bores, making it the perfect choice for an engine refresh that compensates for natural cylinder wear in seasoned machines.\u003c\/p\u003e\n\n\u003ch3\u003eTop Features: Wossner 8587DC Piston Kit\u003c\/h3\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cb\u003eSize C (77.97mm):\u003c\/b\u003e Precision-engineered for 78.02mm bores, restoring factory-spec clearances in cylinders with measurable wear.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003e12.9:1 Compression Ratio:\u003c\/b\u003e Delivers high-performance power while remaining compatible with premium pump fuel.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003ePremium Series Forging:\u003c\/b\u003e Significantly stronger and more heat-resistant than OEM cast pistons, ideal for the high-RPM stress of 250cc racing.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eEnhanced Lubrication Design:\u003c\/b\u003e Radial boss machining and specialized oiling slots ensure the wrist pin stays lubricated during intense riding.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eLow-Friction Skirt Coating:\u003c\/b\u003e Permanent coating reduces drag and protects your cylinder walls from premature wear.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eComplete Assembly:\u003c\/b\u003e Kit includes the forged piston, high-performance rings, wrist pin, and pin locks.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cb\u003eExpert Pro-Tip:\u003c\/b\u003e The Honda CRF250X and early CRF250R utilize a unique Unicam head design. When performing a top-end refresh with the 8587DC, always inspect your intake valves, as they are a known wear item on these models. Size C is the preferred choice for a refresh when your cylinder is still in good condition but has worn beyond the ideal clearance for Size A or B pistons. Using a fresh top-end gasket kit and premium synthetic oil is essential to ensure your new forged piston performs at its peak for many hours to come.\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\u003e2004-2017\u003c\/td\u003e\n            \u003ctd\u003eHonda\u003c\/td\u003e\n            \u003ctd\u003eCRF250X\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003e2004-2005\u003c\/td\u003e\n            \u003ctd\u003eHonda\u003c\/td\u003e\n            \u003ctd\u003eCRF250R\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 choose a Size C piston?\u003c\/b\u003e\u003cbr\u003e\nA: Size C (77.97mm) is designed for cylinders that have seen a high amount of use and have worn slightly larger than the original factory bore. This size restores the proper piston-to-wall clearance (0.05mm), preventing piston slap and maintaining maximum compression.\u003c\/p\u003e\n\n\u003cp\u003e\u003cb\u003eQ: Does this kit include the gasket set?\u003c\/b\u003e\u003cbr\u003e\nA: No, the kit includes the forged piston, rings, wrist pin, and locks. A complete top-end gasket set is sold separately and is required for a professional engine rebuild.\u003c\/p\u003e\n\n\u003cp\u003e\u003cb\u003eQ: Is Wossner better than the original Honda piston?\u003c\/b\u003e\u003cbr\u003e\nA: Yes, Wossner forged pistons are denser and stronger than OEM cast parts. They are designed to handle the thermal and mechanical stresses of high-performance riding more effectively, providing superior durability for your CRF.\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 Ensure a professional, leak-free seal and proper engine compression.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eMotorex Cross Power 4T Oil:\u003c\/b\u003e Premium synthetic lubrication specifically designed for high-performance 4-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 8587DC Piston Kit\",\n  \"image\": [],\n  \"description\": \"Premium Wossner 8587DC Forged 4-Stroke Piston Kit for Honda CRF250X and CRF250R. 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