{"product_id":"namura-020-over-bore-piston-kit-for-honda-rancher-420-fits-2007-2026-87mm","title":"Namura .020 Over Bore Piston Kit for Honda Rancher 420 fits 2007-2026 87mm","description":"\u003ch2\u003eNamura .020 Over Bore Piston Kit for Honda Rancher 420\u003c\/h2\u003e\u003cp\u003eThis oversize piston kit from Namura replaces the stock piston on Honda Rancher 420 engines, boosting displacement and restoring compression with a .020 over bore (87mm) design.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThe Namura .020 Over Bore Piston Kit is a direct-fit replacement for 2007-2026 Honda Rancher 420 ATVs, providing a precise 87mm piston with matching rings and pin. This piston kit enables engine rebuilding with a slightly larger bore to refresh worn cylinders.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e.020 oversize (87mm) increases displacement and compression\u003c\/li\u003e\n\u003cli\u003eHigh-silicon aluminum alloy for thermal stability and reduced expansion\u003c\/li\u003e\n\u003cli\u003eFull floating piston pin design reduces friction\u003c\/li\u003e\n\u003cli\u003eIncludes piston rings, pin, and circlips for complete installation\u003c\/li\u003e\n\u003cli\u003ePrecision-machined skirt profile reduces slap and noise\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\u003cli\u003efor Honda Rancher 420 2007-2026\u003c\/li\u003e\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eRebuilding worn or damaged engines in Honda Rancher 420 ATVs\u003c\/li\u003e\n\u003cli\u003ePerformance restoration for farm and utility use\u003c\/li\u003e\n\u003cli\u003eOverbore cylinder surfacing resulting from scoring or taper\u003c\/li\u003e\n\u003cli\u003eTrail and recreational riding with increased power output\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eSpecs At A Glance\u003c\/h4\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNamura\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOversize\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e.020\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBore Diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e87mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHonda Rancher 420\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eYear Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2007-2026\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch4\u003eGood To Know\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Do I need to recondition the cylinder before installing this piston? \u003cstrong\u003eA:\u003c\/strong\u003e Yes, the cylinder must be professionally honed or bored to 87mm to ensure proper piston-to-wall clearance.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Can this piston be used with the stock head and valves? \u003cstrong\u003eA:\u003c\/strong\u003e Yes, the .020 over bore does not alter the cylinder head or valve clearance, so stock components are compatible.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eSlight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.\u003c\/em\u003e\u003c\/p\u003e","brand":"Solid Spare","offers":[{"title":"Default Title","offer_id":44890490830934,"sku":"SZ1F11863","price":138.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/1_b418620e-e230-423c-b178-ce77da4c75ef.jpg?v=1781140621","url":"https:\/\/www.solidspare.com\/products\/namura-020-over-bore-piston-kit-for-honda-rancher-420-fits-2007-2026-87mm","provider":"Solid Spare","version":"1.0","type":"link"}