{"product_id":"namura-na-10043-3k-top-end-kit-87-23-mm-11-1-compression-for-honda-trx420-rancher","title":"Namura NA-10043-3K Top End Kit 87.23 mm, 11:1 Compression for Honda TRX420 Rancher","description":"\u003cp\u003eRestore the upper-end performance of your ATV with the Namura NA-10043-3K Top End Kit. This 87.23 mm, 11:1 compression kit is designed for select Honda TRX420 Rancher models and includes the essential components needed for a dependable top-end rebuild. The kit includes a piston, piston rings, wrist pin, retaining clips, top-end bearing, and gasket kit for convenient installation and complete coverage during service.\u003c\/p\u003e\u003cp\u003eThe Namura piston uses a hypereutectic casting process that increases silicon content to help reduce expansion and improve wear resistance under elevated cylinder temperatures. Its MOS2, or Teflon\/molybdenum, coated skirts use a rolled-on application process designed to create a stronger bond than conventional spray-on coatings. This coating helps reduce friction, improve heat transfer, and minimize the risk of cold seizures during operation.\u003c\/p\u003e\u003cp\u003eThe machined smooth piston head helps reflect combustion heat and reduce carbon buildup, supporting piston protection and consistent engine performance. An anodized dome improves heat resistance and durability, while the 11:1 compression ratio is suited to applications requiring a performance-oriented replacement piston. The included gasket kit, bearing, rings, wrist pin, and clips help simplify the rebuild process.\u003c\/p\u003e\u003cp\u003eFitment includes 2014–2016 Honda TRX420FA1 Rancher 4x4 AT DCT with SRA; 2014–2017 Honda TRX420FA2 Rancher 4x4 AT DCT EPS with SRA; and 2014–2016 Honda TRX420FE1 Rancher 4x4 ES with SRA. Verify the exact model designation, year, bore specification, and engine configuration before installation. Manufacturer and vendor part number: NA-10043-3K.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eComplete top-end kit includes piston, rings, wrist pin, retaining clips, top-end bearing, and gasket kit\u003c\/li\u003e\n\u003cli\u003e87.23 mm piston size with an 11:1 compression ratio\u003c\/li\u003e\n\u003cli\u003eMOS2 Teflon\/molybdenum coated skirts help reduce friction, improve heat transfer, and minimize cold-seizure risk\u003c\/li\u003e\n\u003cli\u003eMachined smooth head helps reflect combustion heat and reduce carbon buildup\u003c\/li\u003e\n\u003cli\u003eAnodized dome improves heat resistance and piston durability\u003c\/li\u003e\n\u003cli\u003eHypereutectic casting process provides reduced expansion and improved wear resistance\u003c\/li\u003e\n\u003cli\u003eFits select 2014–2017 Honda TRX420 Rancher 4x4 models with SRA\u003c\/li\u003e\n\u003cli\u003eBrand: Namura; manufacturer and vendor part number: NA-10043-3K\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\nFitment:\u003cbr\u003e\n2009 Honda TRX420FA Rancher AT [IRS]\u003cbr\u003e\n2009 Honda TRX420FE Rancher ES [SRA]\u003cbr\u003e\n2009 Honda TRX420FM Rancher [SRA]\u003cbr\u003e\n2009 Honda TRX420FPA Rancher w\/PS [IRS]\u003cbr\u003e\n2009 Honda TRX420FPE Rancher ES w\/PS [SRA]\u003cbr\u003e\n2009 Honda TRX420FPM Rancher w\/PS [SRA]\u003cbr\u003e\n2009 Honda TRX420TE Rancher 2x4 ES [SRA]\u003cbr\u003e\n2009 Honda TRX420TM Rancher [SRA]\u003cbr\u003e\n2010 Honda TRX420FA Rancher AT [IRS]\u003cbr\u003e\n2010 Honda TRX420FE Rancher ES [SRA]\u003cbr\u003e\n2010 Honda TRX420FM Rancher [SRA]\u003cbr\u003e\n2010 Honda TRX420FPA Rancher w\/PS [IRS]\u003cbr\u003e\n2010 Honda TRX420FPE Rancher ES w\/PS [SRA]\u003cbr\u003e\n2010 Honda TRX420FPM Rancher w\/PS [SRA]\u003cbr\u003e\n2010 Honda TRX420TE Rancher 2x4 ES [SRA]\u003cbr\u003e\n2010 Honda TRX420TM Rancher [SRA]\u003cbr\u003e\n2011 Honda TRX420FA Rancher AT [IRS]\u003cbr\u003e\n2011 Honda TRX420FE Rancher ES [SRA]\u003cbr\u003e\n2011 Honda TRX420FM Rancher [SRA]\u003cbr\u003e\n2011 Honda TRX420FPA Rancher w\/PS [IRS]\u003cbr\u003e\n2011 Honda TRX420FPE Rancher ES w\/PS [SRA]\u003cbr\u003e\n2011 Honda TRX420FPM Rancher w\/PS [SRA]\u003cbr\u003e\n2011 Honda TRX420TE Rancher 2x4 ES [SRA]\u003cbr\u003e\n2011 Honda TRX420TM Rancher [SRA]\u003cbr\u003e\n2012 Honda TRX420FA Rancher AT [IRS]\u003cbr\u003e\n2012 Honda TRX420FE Rancher ES [SRA]\u003cbr\u003e\n2012 Honda TRX420FM Rancher [SRA]\u003cbr\u003e\n2012 Honda TRX420FPA Rancher w\/PS [IRS]\u003cbr\u003e\n2012 Honda TRX420FPE Rancher ES w\/PS [SRA]\u003cbr\u003e\n2012 Honda TRX420FPM Rancher w\/PS [SRA]\u003cbr\u003e\n2012 Honda TRX420TE Rancher 2x4 ES [SRA]\u003cbr\u003e\n2012 Honda TRX420TM Rancher [SRA]\u003cbr\u003e\n2013 Honda TRX420FA Rancher AT [IRS]\u003cbr\u003e\n2013 Honda TRX420FE Rancher ES [SRA]\u003cbr\u003e\n2013 Honda TRX420FM Rancher [SRA]\u003cbr\u003e\n2013 Honda TRX420FPA Rancher w\/PS [IRS]\u003cbr\u003e\n2013 Honda TRX420FPE Rancher ES w\/PS [SRA]\u003cbr\u003e\n2013 Honda TRX420FPM Rancher w\/PS [SRA]\u003cbr\u003e\n2013 Honda TRX420TE Rancher 2x4 ES [SRA]\u003cbr\u003e\n2013 Honda TRX420TM Rancher [SRA]\u003cbr\u003e\n2014 Honda TRX420FA Rancher AT [IRS]\u003cbr\u003e\n2014 Honda TRX420FA1 Rancher 4x4 AT DCT [SRA]\u003cbr\u003e\n2014 Honda TRX420FA2 Rancher 4x4 AT DCT EPS [SRA]\u003cbr\u003e\n2014 Honda TRX420FE1 Rancher 4x4 ES [SRA]\u003cbr\u003e\n2014 Honda TRX420FM1 Rancher 4x4 [SRA]\u003cbr\u003e\n2014 Honda TRX420FM2 Rancher 4x4 EPS [SRA]\u003cbr\u003e\n2014 Honda TRX420FPA Rancher w\/PS [IRS]\u003cbr\u003e\n2014 Honda TRX420TE1 Rancher 2x4 ES [SRA]\u003cbr\u003e\n2014 Honda TRX420TM1 Rancher [SRA]\u003cbr\u003e\n2015 Honda TRX420FA1 Rancher 4x4 AT DCT [SRA]\u003cbr\u003e\n2015 Honda TRX420FA2 Rancher 4x4 AT DCT EPS [SRA]\u003cbr\u003e\n2015 Honda TRX420FE1 Rancher 4x4 ES [SRA]\u003cbr\u003e\n2015 Honda TRX420FM1 Rancher 4x4 [SRA]\u003cbr\u003e\n2015 Honda TRX420FM2 Rancher 4x4 EPS [SRA]\u003cbr\u003e\n2015 Honda TRX420TE1 Rancher 2x4 ES [SRA]\u003cbr\u003e\n2015 Honda TRX420TM1 Rancher [SRA]\u003cbr\u003e\n2016 Honda TRX420FA1 Rancher 4x4 AT DCT [SRA]\u003cbr\u003e\n2016 Honda TRX420FA2 Rancher 4x4 AT DCT EPS [SRA]\u003cbr\u003e\n2016 Honda TRX420FA5 Rancher 4x4 AT DCT [IRS]\u003cbr\u003e\n2016 Honda TRX420FA6 Rancher 4x4 AT DCT EPS [IRS]\u003cbr\u003e\n2016 Honda TRX420FE1 Rancher 4x4 ES [SRA]\u003cbr\u003e\n2016 Honda TRX420FM1 Rancher 4x4 [SRA]\u003cbr\u003e\n2016 Honda TRX420FM2 Rancher 4x4 EPS [SRA]\u003cbr\u003e\n2016 Honda TRX420TE1 Rancher 2x4 ES [SRA]\u003cbr\u003e\n2016 Honda TRX420TM1 Rancher [SRA]\u003cbr\u003e\n2017 Honda TRX420FA2 Rancher 4x4 AT DCT EPS [SRA]\u003cbr\u003e\n2017 Honda TRX420FA5 Rancher 4x4 AT DCT [IRS]\u003cbr\u003e\n2017 Honda TRX420FA6 Rancher 4x4 AT DCT EPS [IRS]\u003cbr\u003e\n2017 Honda TRX420FE1 Rancher 4x4 ES [SRA]\u003cbr\u003e\n2017 Honda TRX420FM1 Rancher 4x4 [SRA]\u003cbr\u003e\n2017 Honda TRX420TM1 Rancher [SRA]\u003cbr\u003e\n2018 Honda TRX420FA2 Rancher 4x4 AT DCT EPS [SRA]\u003cbr\u003e\n2018 Honda TRX420FA5 Rancher 4x4 AT DCT [IRS]\u003cbr\u003e\n2018 Honda TRX420FA6 Rancher 4x4 AT DCT EPS [IRS]\u003cbr\u003e\n2018 Honda TRX420FE1 Rancher 4x4 ES [SRA]\u003cbr\u003e\n2018 Honda TRX420FM1 Rancher 4x4 [SRA]\u003cbr\u003e\n2018 Honda TRX420TM1 Rancher [SRA]\u003cbr\u003e\n2023 Honda TRX420FA2 Rancher 4x4 AT DCT EPS [SRA]\u003cbr\u003e\n2023 Honda TRX420FA5 Rancher 4x4 AT DCT [IRS]\u003cbr\u003e\n2023 Honda TRX420FA6 Rancher 4x4 AT DCT EPS [IRS]\u003cbr\u003e\n2023 Honda TRX420FE1 Rancher 4x4 ES [SRA]\u003cbr\u003e\n2023 Honda TRX420FM1 Rancher 4x4 [SRA]\u003cbr\u003e\n2023 Honda TRX420FM2 Rancher 4x4 EPS [SRA]\u003cbr\u003e\n2023 Honda TRX420TE1 Rancher 2x4 ES [SRA]\u003cbr\u003e\n2023 Honda TRX420TM1 Rancher [SRA]\u003cbr\u003e\n2024 Honda TRX420FA2 Rancher 4x4 AT DCT EPS [SRA]\u003cbr\u003e\n2024 Honda TRX420FA5 Rancher 4x4 AT DCT [IRS]\u003cbr\u003e\n2024 Honda TRX420FA6 Rancher 4x4 AT DCT EPS [IRS]\u003cbr\u003e\n2024 Honda TRX420FE1 Rancher 4x4 ES [SRA]\u003cbr\u003e\n2024 Honda TRX420FM1 Rancher 4x4 [SRA]\u003cbr\u003e\n2024 Honda TRX420FM2 Rancher 4x4 EPS [SRA]\u003cbr\u003e\n2024 Honda TRX420TE1 Rancher 2x4 ES [SRA]\u003cbr\u003e\n2024 Honda TRX420TM1 Rancher [SRA]","brand":"NAMURA","offers":[{"title":"Default Title","offer_id":67559263076587,"sku":"186-10433","price":155.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/3882\/9547\/files\/dd77-572a583cd9540_3843bd03-d1cc-459b-a400-70ec463ecc11.jpg?v=1790771354","url":"https:\/\/ctracingservices.com\/products\/namura-na-10043-3k-top-end-kit-87-23-mm-11-1-compression-for-honda-trx420-rancher","provider":"Cascade Tire \u0026 Racing Services","version":"1.0","type":"link"}