{"product_id":"wossner-8673da-piston-kit-yamaha-raptor-700-rhino-700-grizzly-700-size-a","title":"Wossner 8673DA Piston Kit - Yamaha Raptor 700 \/ Rhino 700 \/ Grizzly 700 Size A","description":"\u003ch3\u003eWossner 8673DA Pro Series Forged 4-Stroke Piston Kit - Standard Size A\u003c\/h3\u003e\n\n\u003cp\u003eRefresh the powerhouse of your Yamaha with the Wossner 8673DA Piston Kit. Engineered specifically for the high-torque 700cc powerplant found in the Yamaha Raptor 700, Grizzly 700, and Rhino 700 models (2006-2014), this Pro Series forged kit is the professional choice for maintaining factory-spec performance. At Moto-House MX, we understand that whether you are racing across dunes or hauling through trails, your engine deserves aerospace-grade components that offer superior strength and heat management over stock cast alternatives.\u003c\/p\u003e\n\n\u003cp\u003eForged from premium aluminum alloy, the 8673DA maintains a reliable 11.0:1 compression ratio, providing smooth, consistent torque and compatibility with quality fuel. This kit features Wossner’s Pro Series radial boss machining and enhanced oiling slots for superior wrist pin lubrication—a critical upgrade for the large-bore 102mm piston. The permanent skirt coating reduces internal friction and piston rock, leading to a quieter running engine and a more efficient break-in period. This Standard Size A piston (101.94mm) is precision-matched for 102.00mm bores, restoring your ATV or UTV to its original mechanical tolerances.\u003c\/p\u003e\n\n\u003ch3\u003eTop Features: Wossner 8673DA Piston Kit\u003c\/h3\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cb\u003eStandard Size A (101.94mm):\u003c\/b\u003e Precision-engineered for 102.00mm bores to maintain factory-spec clearances and maximize engine life.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003e11.0:1 Compression Ratio:\u003c\/b\u003e Matches original performance specifications for reliable power delivery and engine longevity.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003ePro Series Forged Construction:\u003c\/b\u003e Denser and more resilient than stock cast pistons, offering superior fatigue resistance for high-load ATV and UTV applications.\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 remains lubricated under intense mechanical stress.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eLow-Friction Skirt Coating:\u003c\/b\u003e Permanent molybdenum disulphide coating protects cylinder walls and reduces internal drag.\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 Yamaha 700cc engine is a workhorse, but its large-bore design creates significant heat. Size A is the ideal choice for a cylinder that is still within factory service limits or has been freshly replated. When performing a rebuild with the 8673DA, we recommend a thorough inspection of the timing chain and oil pump. Always use a fresh top-end gasket kit and premium synthetic oil to provide a professional-grade seal and protect your new forged assembly for miles of reliable riding.\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\u003e2006-2014\u003c\/td\u003e\n            \u003ctd\u003eYamaha\u003c\/td\u003e\n            \u003ctd\u003eRaptor 700 \/ 700R \/ SE \/ GYTR\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003e2007-2013\u003c\/td\u003e\n            \u003ctd\u003eYamaha\u003c\/td\u003e\n            \u003ctd\u003eGrizzly 700 FI 4x4 \/ EPS \/ SE \/ Ducks Unltd \/ Outdoorsman\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003e2008-2013\u003c\/td\u003e\n            \u003ctd\u003eYamaha\u003c\/td\u003e\n            \u003ctd\u003eRhino 700 FI\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 101.94mm piston designed for the standard 102.00mm bore. It is the correct choice for cylinders that are new or within original factory service limits.\u003c\/p\u003e\n\n\u003cp\u003e\u003cb\u003eQ: Why choose Wossner for my Yamaha 700?\u003c\/b\u003e\u003cbr\u003e\nA: Wossner forged pistons are significantly stronger than OEM cast parts. For large-bore engines like the Raptor or Grizzly, a forged piston handles the thermal and mechanical stresses much better, providing a higher safety margin during heavy use.\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\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 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 8673DA Piston Kit\",\n  \"image\": [],\n  \"description\": \"Premium Wossner 8673DA Forged 4-Stroke Piston Kit for 2006-2014 Yamaha Raptor 700, Grizzly 700, and Rhino 700. 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