{"product_id":"namura-na-10043-1k-top-end-kit-86-73-mm-0-25-11-1-compression-for-honda-rancher-420","title":"Namura NA-10043-1K Top End Kit, 86.73 mm +0.25, 11:1 Compression for Honda Rancher 420","description":"\u003cp\u003eRestore dependable top-end performance with the Namura NA-10043-1K Top End Kit. Designed for select Honda Rancher 420 AT and ES models, this kit includes the piston, piston rings, wrist pin, retaining clips, top-end bearing, and gasket kit needed for a complete upper-engine rebuild. The piston is manufactured for an 11:1 compression ratio and an 86.73 mm +0.25 oversize application, providing a precise replacement solution for engines requiring a rebore.\u003c\/p\u003e\u003cp\u003eThe Namura piston features MOS2, or Teflon and molybdenum, coated skirts. This rolled-on coating process creates a strong bond that helps reduce friction, improve heat transfer, and minimize the risk of cold seizures. Machined smooth heads help reflect combustion heat and reduce carbon buildup, helping protect the piston crown while supporting consistent engine operation.\u003c\/p\u003e\u003cp\u003eAn anodized dome increases heat resistance and durability, while the hypereutectic casting process provides increased silicon content for controlled expansion and improved wear resistance. These features help the piston withstand higher cylinder temperatures and demanding riding conditions. The kit is intended for compatible 2014–2017 Honda TRX420FA and 2014–2016 Honda TRX420FE applications, including Rancher 4x4 AT DCT, AT DCT EPS, and ES models with SRA. Verify the exact model designation and engine requirements before installation.\u003c\/p\u003e\u003cp\u003eManufacturer: Namura. Vendor part number: NA-10043-1K.\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\u003e86.73 mm +0.25 oversize piston designed for an 11:1 compression ratio\u003c\/li\u003e\n\u003cli\u003eMOS2 Teflon and molybdenum coated skirts help reduce friction, improve heat transfer, and minimize cold-seizure risk\u003c\/li\u003e\n\u003cli\u003eMachined smooth piston 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 controlled expansion and increased wear resistance\u003c\/li\u003e\n\u003cli\u003eFits select 2014–2017 Honda TRX420FA Rancher 4x4 AT DCT and AT DCT EPS models\u003c\/li\u003e\n\u003cli\u003eFits select 2014–2016 Honda TRX420FE Rancher 4x4 ES models\u003c\/li\u003e\n\u003cli\u003eBrand: Namura\u003c\/li\u003e\n\u003cli\u003eManufacturer part number: NA-10043-1K\u003c\/li\u003e\n\u003cli\u003eVendor part number: NA-10043-1K\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 TRX420FA5 Rancher 4x4 AT DCT [IRS]\u003cbr\u003e\n2015 Honda TRX420FA6 Rancher 4x4 AT DCT EPS [IRS]\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\n2019 Honda TRX420FA2 Rancher 4x4 AT DCT EPS [SRA]\u003cbr\u003e\n2019 Honda TRX420FA5 Rancher 4x4 AT DCT [IRS]\u003cbr\u003e\n2019 Honda TRX420FA6 Rancher 4x4 AT DCT EPS [IRS]\u003cbr\u003e\n2020 Honda TRX420FA2 Rancher 4x4 AT DCT EPS [SRA]\u003cbr\u003e\n2020 Honda TRX420FA5 Rancher 4x4 AT DCT [IRS]\u003cbr\u003e\n2020 Honda TRX420FA6 Rancher 4x4 AT DCT EPS [IRS]\u003cbr\u003e\n2021 Honda TRX420FA2 Rancher 4x4 AT DCT EPS [SRA]\u003cbr\u003e\n2021 Honda TRX420FA5 Rancher 4x4 AT DCT [IRS]\u003cbr\u003e\n2021 Honda TRX420FA6 Rancher 4x4 AT DCT EPS [IRS]\u003cbr\u003e\n2022 Honda TRX420FA2 Rancher 4x4 AT DCT EPS [SRA]\u003cbr\u003e\n2022 Honda TRX420FA5 Rancher 4x4 AT DCT [IRS]\u003cbr\u003e\n2022 Honda TRX420FA6 Rancher 4x4 AT DCT EPS [IRS]\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":67559263731947,"sku":"186-10431","price":155.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/3882\/9547\/files\/dd77-572a583cd9540_77cb248a-07be-42c8-a80f-3ba4824cd3d7.jpg?v=1790771420","url":"https:\/\/ctracingservices.com\/products\/namura-na-10043-1k-top-end-kit-86-73-mm-0-25-11-1-compression-for-honda-rancher-420","provider":"Cascade Tire \u0026 Racing Services","version":"1.0","type":"link"}