{"product_id":"wossner-8937da-piston-kit-2017-2026-honda-crf450r-crf450rx-crf450rwe-size-a","title":"Wossner 8937DA Piston Kit - 2017-2026 Honda CRF450R CRF450RX CRF450RWE Size A","description":"\u003ch3\u003eWossner 8937DA Pro Series Forged 4-Stroke Piston Kit - Standard Size A\u003c\/h3\u003e\n\n\u003cp\u003eUnlock the elite racing potential of your Honda 450cc engine with the Wossner 8937DA Piston Kit. Designed for the 2017-2026 Honda CRF450R, RX, and Works Edition (RWE), this Pro Series forged kit is the ultimate choice for riders seeking a significant bump in performance while maintaining \"Factory Quality\" reliability. At Moto-House MX, we specialize in high-performance builds, and the Wossner Pro Series stands out as a top-tier upgrade for the modern Honda Unicam engine.\u003c\/p\u003e\n\n\u003cp\u003eForged from aerospace-grade aluminum alloy, the 8937DA pushes performance boundaries with a high-compression 14.0:1 ratio. This increase in compression delivers explosive throttle response and massive gains in low-to-mid range torque, perfect for clearing jumps and pulling holeshots. This piston includes advanced radial boss machining and enhanced oiling slots for superior wrist pin lubrication—vital for the extreme thermal loads of a high-compression race engine. The permanent skirt coating reduces internal friction and piston rock, resulting in a quieter engine and a more controlled break-in period. This Standard Size A piston (95.95mm) is precision-matched for 96.00mm bores, restoring your machine to its original race-winning tolerances with added power.\u003c\/p\u003e\n\n\u003ch3\u003eTop Features: Wossner 8937DA Piston Kit\u003c\/h3\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cb\u003eStandard Size A (95.95mm Piston):\u003c\/b\u003e Precision-matched for 96.00mm bores to maintain tight factory clearances and maximum mechanical efficiency.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eHigh-Compression 14.0:1 Ratio:\u003c\/b\u003e Engineered for serious racers looking for increased torque and faster engine acceleration.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003ePro Series Forging:\u003c\/b\u003e Denser and more heat-resistant than OEM cast pistons, featuring a double-bridged design where noted for maximum structural integrity.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eAdvanced Lubrication Design:\u003c\/b\u003e Radial boss machining and annular grooves ensure the wrist pin stays lubricated during sustained high-RPM operation.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eLow-Friction Skirt Coating:\u003c\/b\u003e Minimizes drag and protects cylinder walls, ensuring your engine runs cooler and lasts longer.\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 8937DA is a high-compression Pro Series piston. When jumping to a 14.0:1 ratio, we recommend using high-quality race fuel or the highest octane pump gas available to prevent detonation. During installation, always verify your squish clearance and inspect your valve train. Because this is a high-performance part, pairing it with a fresh top-end gasket kit and premium synthetic oil is essential to ensure your Honda performs at its peak for every moto.\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\u003e2017-2026\u003c\/td\u003e\n            \u003ctd\u003eHonda\u003c\/td\u003e\n            \u003ctd\u003eCRF450R \/ CRF450RX\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003e2019-2026\u003c\/td\u003e\n            \u003ctd\u003eHonda\u003c\/td\u003e\n            \u003ctd\u003eCRF450RWE (Works Edition)\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003e2022-2024\u003c\/td\u003e\n            \u003ctd\u003eHonda\u003c\/td\u003e\n            \u003ctd\u003eCRF450R-S\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: Is this a Standard Size piston?\u003c\/b\u003e\u003cbr\u003e\nA: Yes, this is the 95.95mm piston designed for the standard 96.00mm bore. It is the correct choice for cylinders that are new, freshly replated, or within factory service limits.\u003c\/p\u003e\n\n\u003cp\u003e\u003cb\u003eQ: What fuel should I use with 14.0:1 compression?\u003c\/b\u003e\u003cbr\u003e\nA: While high-quality 93 octane pump gas may work in some conditions, for maximum safety and performance, we recommend using a 50\/50 race gas blend or full race fuel to prevent engine knock and ensure clean combustion.\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, leak-free reassembly.\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 seal for your high-compression engine.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eMotorex Cross Power 4T Oil:\u003c\/b\u003e The ultimate synthetic lubrication 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 8937DA Piston Kit\",\n  \"image\": [],\n  \"description\": \"Premium Wossner 8937DA Pro Series Forged 4-Stroke Piston Kit for 2017-2026 Honda CRF450R, RX, and RWE models. High-Compression 14.0:1 Standard Size A.\",\n  \"sku\": \"8937DA\",\n  \"brand\": {\n    \"@type\": \"Brand\",\n    \"name\": \"Wossner\"\n  },\n  \"offers\": {\n    \"@type\": \"Offer\",\n    \"url\": \"https:\/\/motohousemx.com\/products\/wossner-8937da-piston-kit\",\n    \"priceCurrency\": \"USD\",\n    \"availability\": \"https:\/\/schema.org\/InStock\"\n  }\n}\n\u003c\/script\u003e","brand":"WOSSNER","offers":[{"title":"Default Title","offer_id":44496000516179,"sku":"8937DA","price":214.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1754\/5421\/files\/1490925.png?v=1776230096","url":"https:\/\/motohousemx.com\/products\/wossner-8937da-piston-kit-2017-2026-honda-crf450r-crf450rx-crf450rwe-size-a","provider":"Moto-House MX","version":"1.0","type":"link"}