{"product_id":"piston-ring-kit-honda-trx-420-rancher-os-1-00-2007-2013","title":"Piston Ring Kit For Honda TRX 420 Rancher OS 1.00 Oversize Fits 2007 To 2013 Engines","description":"\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan\u003eWhen your Honda TRX 420 Rancher starts losing power or burning oil due to worn piston rings, this oversize 1.00 piston ring kit steps in as the essential upgrade for models from 2007 to 2013. Designed specifically for the 420cc engine in these ATVs, it delivers a precise seal to restore compression and eliminate inefficient ring seating that hampers performance on rugged trails or farm duties. Swapping in this kit means regaining that dependable throttle response and reducing oil consumption, letting you tackle demanding rides with confidence and without the frustration of mid-ride failures. This aftermarket replacement tackles those issues head-on by using components engineered to match the exact groove geometry of your TRX 420 Rancher, ensuring a tight fit that prevents leaks and restores peak efficiency for both trail adventures and agricultural work. It's a reliable choice because it's built with the precision and durability that hold up under real-world stresses, giving you a cost-effective way to breathe new life into your machine without compromising on quality or performance.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eComprehensive Vehicle Fitment\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv class=\"ds-scroll-area _1210dd7 c03cafe9\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cspan\u003eManufacturer\u003c\/span\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cspan\u003eModels \/ Series\u003c\/span\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cspan\u003eYears \/ Details\u003c\/span\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eHonda\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eTRX420FE Rancher 4x4 ES\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e2007–2013\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eHonda\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eTRX420FM Rancher 4x4\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e2007–2013\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eHonda\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eTRX420FA Rancher 4x4 Auto\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e2009–2013\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eHonda\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eTRX420TE Rancher 2x4 ES\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e2007–2013\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eHonda\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eTRX420TM Rancher 2x4\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e2007–2013\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eHonda\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eTRX420FPA Rancher AT 4x4 w\/PS\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e2009–2014\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eHonda\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eTRX420FPE Rancher ES 4x4 w\/PS\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e2009–2013\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eHonda\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eTRX420FPM Rancher 4x4 w\/PS\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e2009–2013\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e \u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eProduct Specifications\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv class=\"ds-scroll-area _1210dd7 c03cafe9\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cspan\u003eAttribute\u003c\/span\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cspan\u003eDetails\u003c\/span\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eOEM Reference Part Numbers\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003e13012-HP5-600\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eAftermarket Cross-References\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003e\u003cspan\u003e51-231-05\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e (WSM) \u003c\/span\u003e\u003ca href=\"https:\/\/www.denniskirk.com\/wsm\/piston-rings-51-231-05.p1332802r.prd\/1332802R.sku?site_preference=mobile\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003cspan\u003e, \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e875XSY\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e (Wossner) \u003c\/span\u003e\u003ca href=\"https:\/\/allterrain.ie\/products\/piston-kit-07-20-trx420-87-50-8869d100-wossner-forged-ranche-trx420fa-fe-fm-te-tm-fpa-fpe-f\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/www.oro2u.com\/piston-kit-07-20-trx420-87-50-8869d100-wossner-forged-ranche-trx420fa-fe-fm-te-tm-fpa-fpe-f\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003cspan\u003e, \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e8750XX\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e (Wiseco) \u003c\/span\u003e\u003ca href=\"https:\/\/b2b.jepistons.com\/catalog\/product\/view\/id\/11969\/category\/14339\/\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/staging.wiseco.com\/product\/powersports\/pistons-powersports\/piston-kits\/honda-trx420fe-fourtrax-rancher-4x4-es-wiseco-piston-kit-3\/\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eType\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003ePiston Ring Kit, OS 1.00 oversize\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eManufacturer\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eAftermarket Replacement\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eCountry of Origin\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eMade in Japan\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eApplication\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eHonda TRX420 Rancher (2007–2013) with 420cc engine\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eOversize\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1.00 mm, designed for rebored cylinders to ensure a precise fit and seal\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eBore Size Compatibility\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan\u003e87.00 mm – 87.50 mm after boring (final bore size 87.50 mm for 1.00mm OS) \u003c\/span\u003e\u003ca href=\"https:\/\/b2b.jepistons.com\/catalog\/product\/view\/id\/11969\/category\/14339\/\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/www.denniskirk.com\/wsm\/piston-rings-51-231-05.p1332802r.prd\/1332802R.sku?site_preference=mobile\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/allterrain.ie\/products\/piston-kit-07-20-trx420-87-50-8869d100-wossner-forged-ranche-trx420fa-fe-fm-te-tm-fpa-fpe-f\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eRing Configuration\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eTop ring, second ring, and oil ring set (standard piston-ring trio)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eMaterial\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eHigh-carbon steel alloy \/ High-strength metal alloy treated for enhanced heat resistance and durability\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eIncluded Components\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eTop ring, second ring, oil ring set (piston, wrist pin, circlips, gaskets not included)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e \u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eOEM \u0026amp; Aftermarket Cross-Reference Information\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv class=\"ds-scroll-area _1210dd7 c03cafe9\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cspan\u003ePart Number\u003c\/span\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cspan\u003eBrand \/ Type\u003c\/span\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cspan\u003eCross-Reference Notes\u003c\/span\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003e13012-HP5-600\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eHonda OEM\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan\u003eOEM piston ring kit standard for TRX420 Rancher variants; commonly cited for 420cc engines \u003c\/span\u003e\u003ca href=\"https:\/\/www.amazon.ca\/dp\/B0CNT66LNH?tag=picclick04-20\u0026amp;linkCode=osi\u0026amp;th=1\u0026amp;psc=1\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003e51-231-05\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eWSM\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan\u003ePiston Ring Set – 87mm bore, 1.0mm oversize. Fits Honda TRX420FA\/FE\/FM\/TE\/TM\/FPA\/FPE\/FPM (2007-2019). Includes (1) top ring, (1) second ring, (2) oil rings, (1) oil ring spacer \u003c\/span\u003e\u003ca href=\"https:\/\/www.denniskirk.com\/wsm\/piston-rings-51-231-05.p1332802r.prd\/1332802R.sku?site_preference=mobile\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003e875XSY\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eWossner\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan\u003eRing Set for 87.50mm bore pistons. Compatible with Wossner forged piston kits for TRX420 Rancher (2007-2020) \u003c\/span\u003e\u003ca href=\"https:\/\/allterrain.ie\/products\/piston-kit-07-20-trx420-87-50-8869d100-wossner-forged-ranche-trx420fa-fe-fm-te-tm-fpa-fpe-f\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/www.oro2u.com\/piston-kit-07-20-trx420-87-50-8869d100-wossner-forged-ranche-trx420fa-fe-fm-te-tm-fpa-fpe-f\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003e8750XX\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eWiseco\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan\u003eRing Set for 87.50mm bore pistons. Included with Wiseco 40050M08750 piston kit. Fits TRX420FE (2007-2021) and related models \u003c\/span\u003e\u003ca href=\"https:\/\/b2b.jepistons.com\/catalog\/product\/view\/id\/11969\/category\/14339\/\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/staging.wiseco.com\/product\/powersports\/pistons-powersports\/piston-kits\/honda-trx420fe-fourtrax-rancher-4x4-es-wiseco-piston-kit-3\/\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003eNA-30025T\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eNamura\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eComplete Piston and Gasket Kit – Available in standard and oversize configurations for TRX420 models\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003e192.045H5\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eAftermarket\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eInternal product code used for the OS 1.00 TRX420 Rancher kit; corresponds to Honda TRX420 Rancher OS 1.00 applications\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e \u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eWhat's Included\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan\u003eBased on standard piston ring kits for the TRX420 engine, this kit includes:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eTop Ring\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – High-carbon steel, chrome-plated for enhanced durability and wear resistance\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eSecond Ring\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Cast iron or ductile iron for reliable heat management and sealing\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eOil Ring Set\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Multi-piece oil control ring assembly with expander spacer\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cem\u003e\u003cspan\u003eNote: This is a piston ring kit only. It does not include the piston, wrist pin, circlips, or gaskets. For a complete top-end rebuild, pistons and additional components are available separately from manufacturers like Wiseco \u003c\/span\u003e\u003ca href=\"https:\/\/b2b.jepistons.com\/catalog\/product\/view\/id\/11969\/category\/14339\/\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/staging.wiseco.com\/product\/powersports\/pistons-powersports\/piston-kits\/honda-trx420fe-fourtrax-rancher-4x4-es-wiseco-piston-kit-3\/\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003cspan\u003e, Wossner \u003c\/span\u003e\u003ca href=\"https:\/\/allterrain.ie\/products\/piston-kit-07-20-trx420-87-50-8869d100-wossner-forged-ranche-trx420fa-fe-fm-te-tm-fpa-fpe-f\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/www.oro2u.com\/piston-kit-07-20-trx420-87-50-8869d100-wossner-forged-ranche-trx420fa-fe-fm-te-tm-fpa-fpe-f\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003cspan\u003e, and Namura.\u003c\/span\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eWhy Choose This Aftermarket Piston Ring Kit?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eExtensive Vehicle Coverage:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Precision-engineered for Honda TRX420 Rancher models spanning 2007 through 2013, including FE, FM, FA, TE, TM, FPA, FPE, and FPM variants, with aftermarket fitment extending through 2019 for some applications \u003c\/span\u003e\u003ca href=\"https:\/\/www.denniskirk.com\/wsm\/piston-rings-51-231-05.p1332802r.prd\/1332802R.sku?site_preference=mobile\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eOEM Cross-Reference:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Cross-references genuine Honda part number \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e13012-HP5-600\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e for confident replacement, as verified in service manuals and parts diagrams for the TRX420 platform \u003c\/span\u003e\u003ca href=\"https:\/\/www.amazon.ca\/dp\/B0CNT66LNH?tag=picclick04-20\u0026amp;linkCode=osi\u0026amp;th=1\u0026amp;psc=1\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/www.emanuals.com\/2007-2013-rancher-420-trx420-fe-fm-te-tm-fpe-fpm-servcie-repair-manual-highly-detailed-fsm-preview.html\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/www.emanuals.com\/2007-2013-honda-trx420-fourtrax-rancher-service-repair-manual.html\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eProven Aftermarket Support:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Leading aftermarket brands including WSM \u003c\/span\u003e\u003ca href=\"https:\/\/www.denniskirk.com\/wsm\/piston-rings-51-231-05.p1332802r.prd\/1332802R.sku?site_preference=mobile\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003cspan\u003e, Wiseco \u003c\/span\u003e\u003ca href=\"https:\/\/b2b.jepistons.com\/catalog\/product\/view\/id\/11969\/category\/14339\/\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/staging.wiseco.com\/product\/powersports\/pistons-powersports\/piston-kits\/honda-trx420fe-fourtrax-rancher-4x4-es-wiseco-piston-kit-3\/\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003cspan\u003e, and Wossner \u003c\/span\u003e\u003ca href=\"https:\/\/allterrain.ie\/products\/piston-kit-07-20-trx420-87-50-8869d100-wossner-forged-ranche-trx420fa-fe-fm-te-tm-fpa-fpe-f\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/www.oro2u.com\/piston-kit-07-20-trx420-87-50-8869d100-wossner-forged-ranche-trx420fa-fe-fm-te-tm-fpa-fpe-f\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003cspan\u003e manufacture compatible piston and ring kits for these models, validating extensive aftermarket support for the Honda 420cc platform.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003ePremium Materials:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eWSM\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e rings feature the same design as originals for interchangeability and include a complete oil ring set with expander spacer \u003c\/span\u003e\u003ca href=\"https:\/\/www.denniskirk.com\/wsm\/piston-rings-51-231-05.p1332802r.prd\/1332802R.sku?site_preference=mobile\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eWiseco\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e pistons and rings are engineered, forged, and machined in the USA, with improved tensile strength for optimised service life \u003c\/span\u003e\u003ca href=\"https:\/\/b2b.jepistons.com\/catalog\/product\/view\/id\/11969\/category\/14339\/\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/staging.wiseco.com\/product\/powersports\/pistons-powersports\/piston-kits\/honda-trx420fe-fourtrax-rancher-4x4-es-wiseco-piston-kit-3\/\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eWossner\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e components are manufactured in Germany, featuring elliptical design for uniform bearing surface and reduced localized pressure \u003c\/span\u003e\u003ca href=\"https:\/\/allterrain.ie\/products\/piston-kit-07-20-trx420-87-50-8869d100-wossner-forged-ranche-trx420fa-fe-fm-te-tm-fpa-fpe-f\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/www.oro2u.com\/piston-kit-07-20-trx420-87-50-8869d100-wossner-forged-ranche-trx420fa-fe-fm-te-tm-fpa-fpe-f\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eOversize Option:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e The 1.00mm oversize rings allow you to reclaim engineered clearances in worn cylinders after reboring to 87.50mm, restoring compression and combustion efficiency.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eComplete Ring Set:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Includes top ring, second ring, and complete oil ring assembly with expander spacer for proper oil control.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eService Manual Information\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan\u003eThe Honda TRX420 service manuals (2007-2013) provide detailed procedures for cylinder and piston service, including:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan\u003eCylinder inspection for wear, scratches, and damage\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan\u003ePiston-to-cylinder clearance measurement\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan\u003eRing end gap verification\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan\u003eProper ring installation orientation\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan\u003eTorque specifications and tightening sequences \u003c\/span\u003e\u003ca href=\"https:\/\/www.emanuals.com\/2007-2013-rancher-420-trx420-fe-fm-te-tm-fpe-fpm-servcie-repair-manual-highly-detailed-fsm-preview.html\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/www.emanuals.com\/2007-2013-honda-trx420-fourtrax-rancher-service-repair-manual.html\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eInstallation Notes:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan\u003eEnsure the cylinder is properly machined to the correct oversize specification (87.50mm final bore) before installation \u003c\/span\u003e\u003ca href=\"https:\/\/b2b.jepistons.com\/catalog\/product\/view\/id\/11969\/category\/14339\/\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/www.denniskirk.com\/wsm\/piston-rings-51-231-05.p1332802r.prd\/1332802R.sku?site_preference=mobile\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/allterrain.ie\/products\/piston-kit-07-20-trx420-87-50-8869d100-wossner-forged-ranche-trx420fa-fe-fm-te-tm-fpa-fpe-f\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan\u003eProfessional machining and assembly are recommended to ensure proper clearances and ring gap.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan\u003eCheck ring end gap during installation to ensure it falls within factory specifications as outlined in the service manual \u003c\/span\u003e\u003ca href=\"https:\/\/www.emanuals.com\/2007-2013-rancher-420-trx420-fe-fm-te-tm-fpe-fpm-servcie-repair-manual-highly-detailed-fsm-preview.html\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/www.emanuals.com\/2007-2013-honda-trx420-fourtrax-rancher-service-repair-manual.html\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan\u003eThis ring kit does not include the piston, wrist pin, or circlips – ensure your existing piston is in good condition or replace as necessary with a compatible 87.50mm oversize piston from Wiseco \u003c\/span\u003e\u003ca href=\"https:\/\/b2b.jepistons.com\/catalog\/product\/view\/id\/11969\/category\/14339\/\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/staging.wiseco.com\/product\/powersports\/pistons-powersports\/piston-kits\/honda-trx420fe-fourtrax-rancher-4x4-es-wiseco-piston-kit-3\/\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003cspan\u003e, Wossner \u003c\/span\u003e\u003ca href=\"https:\/\/allterrain.ie\/products\/piston-kit-07-20-trx420-87-50-8869d100-wossner-forged-ranche-trx420fa-fe-fm-te-tm-fpa-fpe-f\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/www.oro2u.com\/piston-kit-07-20-trx420-87-50-8869d100-wossner-forged-ranche-trx420fa-fe-fm-te-tm-fpa-fpe-f\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003cspan\u003e, or other quality manufacturers.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan\u003eAfter installation, properly break in the engine according to manufacturer recommendations.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan\u003eVerify your exact model and year against the fitment table to ensure compatibility with your engine configuration.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eWhy Upgrade?\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eWorn piston rings can cause compression loss, excessive oil consumption, and reduced power output—leading to poor performance and potential engine damage. Restore your Honda TRX420 Rancher engine's power and reliability with this quality aftermarket oversize piston ring kit, designed to keep you riding with confidence.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eOrder your piston ring kit today and get back on the trail with confidence.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e","brand":"ATV City","offers":[{"title":"Default Title","offer_id":57319263306102,"sku":"192.045H5","price":17.33,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0971\/0302\/0406\/files\/pistonring_529bd528-ff4b-42a0-afad-396b5151ba78.png?v=1774886131","url":"https:\/\/dgtagri.co.uk\/products\/piston-ring-kit-honda-trx-420-rancher-os-1-00-2007-2013","provider":"DGT Agri","version":"1.0","type":"link"}