{"product_id":"wiseco-4606m08500-forged-piston-kit-85mm-10-1-honda-trx400ex-trx400x","title":"Wiseco 4606M08500 Forged Piston Kit 85mm 10:1 Honda TRX400EX TRX400X","description":"\u003cdiv class=\"container\"\u003e\n\u003cdiv class=\"markdown markdown-main-panel enable-updated-hr-color force-compact-layout md-content tutor-markdown-rendering\" id=\"model-response-message-contentr_cf723054895a29db\" dir=\"ltr\"\u003e\n\u003cp\u003e\u003cb\u003eWiseco High-Performance Forged 4-Stroke Piston Kit — 85.00mm (Standard \/ Stock Bore)\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003ePart Number:\u003c\/b\u003e 4606M08500\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eCondition:\u003c\/b\u003e Brand New in Original Packaging\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eShipping:\u003c\/b\u003e FREE Standard Shipping to the Lower 48 US States!\u003c\/p\u003e\n\u003chr\u003e\n\u003ch4\u003e\u003cb\u003eProduct Overview\u003c\/b\u003e\u003c\/h4\u003e\n\u003cp\u003eRestore or upgrade your Honda 400cc ATV engine with the unmatched durability of a Wiseco forged piston. Designed as a direct drop-in replacement for standard 85mm bore cylinders, this kit maintains a reliable \u003cb\u003e10:1 compression ratio\u003c\/b\u003e while delivering superior fatigue strength and performance compared to stock cast pistons.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch4\u003e\u003cb\u003eTechnical Specifications\u003c\/b\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eManufacturer:\u003c\/b\u003e Wiseco\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003ePart Number:\u003c\/b\u003e 4606M08500\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eBore Diameter (Actual):\u003c\/b\u003e 85.00mm (Standard Stock Bore)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eStroke:\u003c\/b\u003e 70.00mm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eDisplacement:\u003c\/b\u003e 397cc\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eCompression Ratio:\u003c\/b\u003e 10:1\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eEngine Type:\u003c\/b\u003e 4-Stroke\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eMaterial:\u003c\/b\u003e Forged Aerospace-Grade Aluminum Alloy\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch4\u003e\u003cb\u003eIncluded Components\u003c\/b\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e(1) Wiseco Forged Piston (4606M08500)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e(1) High-Performance Ring Set (Part # 3346XC)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e(1) Wrist Pin (Part # S522)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e(2) Circlips (Part # CW20)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch4\u003e\u003cb\u003eVehicle Fitment\u003c\/b\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eHonda TRX400EX FourTrax \/ Sportrax:\u003c\/b\u003e 1999 – 2008\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eHonda TRX400X:\u003c\/b\u003e 2009 – 2014\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eHonda XR400R:\u003c\/b\u003e 1996 – 2004\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003ci\u003ePlease verify cylinder bore size and condition prior to installation.\u003c\/i\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch4\u003e\u003cb\u003eShipping \u0026amp; Terms\u003c\/b\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eFAST \u0026amp; FREE SHIPPING:\u003c\/b\u003e Ships free to all physical street addresses within the lower 48 contiguous United States.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eHandling:\u003c\/b\u003e Orders ship within 1 business day with tracking provided.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eReturns:\u003c\/b\u003e 30-day return window. Item must be brand new, uninstalled, and in its original intact packaging.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c!----\u003e\n\u003c\/div\u003e","brand":"UpdogIndustries.com","offers":[{"title":"Default Title","offer_id":43995454439498,"sku":"4606M08500","price":189.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0226\/1499\/9114\/files\/s-l1600-2026-07-31T141844.393.webp?v=1785525626","url":"https:\/\/updogindustries.com\/products\/wiseco-4606m08500-forged-piston-kit-85mm-10-1-honda-trx400ex-trx400x","provider":"UpdogIndustries.com","version":"1.0","type":"link"}