{"product_id":"namura-nx-70047k-standard-bore-top-end-kit-for-1996-1999-ktm-250-sx-and-250-exc","title":"Namura NX-70047K Standard Bore Top End Kit for 1996–1999 KTM 250 SX and 250 EXC","description":"\u003cp\u003eThe Namura NX-70047K Top End Kit is a complete standard-bore replacement kit designed for select 1996–1999 KTM 250 SX and KTM 250 EXC models with Nikasil-plated cylinders. This kit includes the piston, piston rings, wrist pin, retaining clips, top-end bearing, and gasket kit needed to refresh the upper engine assembly. It is manufactured by Namura and is identified by manufacturer part number NX-70047K and vendor part number 185-7047.\u003c\/p\u003e\u003cp\u003eThe hypereutectic piston casting process increases silicon content to help control expansion, improve wear resistance, and withstand elevated cylinder temperatures. The piston also features a MOS2, or Teflon\/molybdenum, coated skirt applied through a rolled-on process for a durable bond. This coating helps improve heat transfer, reduce friction, and minimize the risk of cold seizures during engine operation.\u003c\/p\u003e\u003cp\u003eAdditional piston features include a machined smooth head that reflects combustion heat and helps reduce carbon buildup, along with an anodized dome that improves heat resistance and durability. Designed for standard-bore Nikasil-cylinder applications, the Namura NX-70047K provides the components needed for a dependable top-end rebuild when matched to the specified KTM fitment and cylinder condition. Always verify the existing cylinder, piston clearance, and engine specifications before installation.\u003c\/p\u003e\u003cp\u003eFitment: Fits 1996, 1997, 1998, and 1999 KTM 250 SX models, as well as 1996, 1997, 1998, and 1999 KTM 250 EXC models.\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\u003eStandard-bore piston designed for Nikasil-plated cylinders\u003c\/li\u003e\n\u003cli\u003eMOS2 Teflon\/molybdenum coated skirt helps 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 piston dome improves heat resistance and durability\u003c\/li\u003e\n\u003cli\u003eHypereutectic casting process provides controlled expansion, increased wear resistance, and improved high-temperature performance\u003c\/li\u003e\n\u003cli\u003eFits 1996–1999 KTM 250 SX and 1996–1999 KTM 250 EXC models\u003c\/li\u003e\n\u003cli\u003eBrand: Namura; manufacturer part number: NX-70047K; vendor part number: 185-7047\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\nFitment:\u003cbr\u003e\n1996 KTM 250 EXC\u003cbr\u003e\n1996 KTM 250 SX\u003cbr\u003e\n1997 KTM 250 EXC\u003cbr\u003e\n1997 KTM 250 SX\u003cbr\u003e\n1998 KTM 250 EXC\u003cbr\u003e\n1998 KTM 250 SX\u003cbr\u003e\n1999 KTM 250 EXC\u003cbr\u003e\n1999 KTM 250 SX","brand":"NAMURA","offers":[{"title":"Default Title","offer_id":67559496843499,"sku":"185-7047","price":111.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/3882\/9547\/files\/8406-5e9621d9ade5b.jpg?v=1790772438","url":"https:\/\/ctracingservices.com\/products\/namura-nx-70047k-standard-bore-top-end-kit-for-1996-1999-ktm-250-sx-and-250-exc","provider":"Cascade Tire \u0026 Racing Services","version":"1.0","type":"link"}