{"product_id":"namura-na-10000-2k-90-46-mm-top-end-kit-for-honda-trx450-foreman","title":"NAMURA NA-10000-2K 90.46 mm Top End Kit for Honda TRX450 Foreman","description":"\u003cp\u003eRestore top-end performance with the NAMURA NA-10000-2K Top End Kit, designed for select Honda TRX450 Foreman ATVs. This 90.46 mm, 11:1 compression kit includes the piston, piston rings, wrist pin, retaining clips, top-end bearing, and gasket kit required for a comprehensive top-end rebuild. The +0.50 mm overbore specification is intended for compatible applications requiring cylinder preparation by a qualified technician.\u003c\/p\u003e\u003cp\u003eThe piston uses a hypereutectic casting process that increases silicon content to help control expansion, improve wear resistance, and withstand elevated cylinder temperatures. Its MOS2, or Teflon\/molybdenum, coated skirts use a rolled-on application process for a strong coating bond. This treatment helps improve heat transfer, reduce friction, and minimize the possibility of cold seizures during operation.\u003c\/p\u003e\u003cp\u003eAdditional piston features include machined smooth heads that help reflect combustion heat and reduce carbon buildup, along with anodized domes engineered to improve heat resistance and durability. Together, these design elements support dependable operation and consistent performance in demanding ATV conditions.\u003c\/p\u003e\u003cp\u003eThe NAMURA NA-10000-2K fits 1998–2004 Honda TRX450FE Foreman ES models with SRA and 1998–2000 Honda TRX450FM Foreman S models with SRA. Confirm the model, year, bore requirement, compression ratio, and cylinder specifications before installation. This product is identified by manufacturer part number NA-10000-2K and vendor part number 186-10002.\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\u003e90.46 mm piston with +0.50 mm overbore specification and 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 controlled expansion, wear resistance, and high-temperature strength\u003c\/li\u003e\n\u003cli\u003eFitment: 1998–2004 Honda TRX450FE Foreman ES with SRA and 1998–2000 Honda TRX450FM Foreman S with SRA\u003c\/li\u003e\n\u003cli\u003eManufacturer Part Number: NA-10000-2K\u003c\/li\u003e\n\u003cli\u003eVendor Part Number: 186-10002\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\nFitment:\u003cbr\u003e\n1998 Honda TRX450FE Foreman ES [SRA]\u003cbr\u003e\n1998 Honda TRX450FM Foreman S [SRA]\u003cbr\u003e\n1999 Honda TRX450FE Foreman ES [SRA]\u003cbr\u003e\n1999 Honda TRX450FM Foreman S [SRA]\u003cbr\u003e\n2000 Honda TRX450FE Foreman ES [SRA]\u003cbr\u003e\n2000 Honda TRX450FM Foreman S [SRA]\u003cbr\u003e\n2001 Honda TRX450FE Foreman ES [SRA]\u003cbr\u003e\n2001 Honda TRX450FM Foreman S [SRA]\u003cbr\u003e\n2002 Honda TRX450FE Foreman ES [SRA]\u003cbr\u003e\n2002 Honda TRX450FM Foreman S [SRA]\u003cbr\u003e\n2003 Honda TRX450FE Foreman ES [SRA]\u003cbr\u003e\n2003 Honda TRX450FM Foreman S [SRA]\u003cbr\u003e\n2004 Honda TRX450FE Foreman ES [SRA]\u003cbr\u003e\n2004 Honda TRX450FM Foreman S [SRA]","brand":"NAMURA","offers":[{"title":"Default Title","offer_id":67559479116011,"sku":"186-10002","price":131.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/3882\/9547\/files\/5ea9-5d76d56084c77_6a805345-a396-4d86-91e8-fdcf00afe438.jpg?v=1790772360","url":"https:\/\/ctracingservices.com\/products\/namura-na-10000-2k-90-46-mm-top-end-kit-for-honda-trx450-foreman","provider":"Cascade Tire \u0026 Racing Services","version":"1.0","type":"link"}