{"product_id":"namura-na-40003-6k-top-end-kit-for-1988-1997-yamaha-yfs200-blaster-67-42-mm-bore","title":"Namura NA-40003-6K Top End Kit for 1988–1997 Yamaha YFS200 Blaster, 67.42 mm Bore","description":"\u003cp\u003eRestore top-end performance on your Yamaha YFS200 Blaster with the Namura NA-40003-6K Top End Kit. Designed for 1988–1997 Yamaha YFS200 Blaster models, this OEM-style replacement kit includes the essential components needed for a dependable piston and cylinder service. The kit includes a piston, piston rings, wrist pin, retaining clips, top-end bearing, and gasket kit for a complete installation solution.\u003c\/p\u003e\u003cp\u003eThe Namura piston features MOS2, or Teflon and molybdenum, coated skirts applied through a rolled-on process that creates a strong, durable bond. This coating helps improve heat transfer, reduce friction, and minimize the risk of cold seizures. The machined smooth piston head reflects combustion heat and helps reduce carbon buildup, supporting piston protection and consistent engine operation. An anodized dome increases heat resistance and durability, while the hypereutectic casting process provides higher silicon content for controlled expansion, improved wear resistance, and reliable performance under elevated cylinder temperatures.\u003c\/p\u003e\u003cp\u003eWith a 67.42 mm piston diameter and a 6.6:1 compression ratio, the Namura NA-40003-6K is intended for riders and technicians seeking an OEM-style top-end replacement for compatible Yamaha Blaster applications. Verify the existing bore, engine condition, and service specifications before installation. Fitment includes the 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, and 1997 Yamaha YFS200 Blaster.\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\u003eMOS2-Coated Skirts: Teflon and molybdenum coating helps improve heat transfer, reduce friction, and minimize cold-seizure risk.\u003c\/li\u003e\n\u003cli\u003eMachined Smooth Head: Reflects combustion heat and helps reduce carbon buildup for improved piston protection.\u003c\/li\u003e\n\u003cli\u003eAnodized Dome: Increases heat resistance and piston durability.\u003c\/li\u003e\n\u003cli\u003eHypereutectic Construction: Higher silicon content helps control expansion, improve wear resistance, and withstand elevated cylinder temperatures.\u003c\/li\u003e\n\u003cli\u003eFitment: Designed for 1988–1997 Yamaha YFS200 Blaster models.\u003c\/li\u003e\n\u003cli\u003ePiston Size: 67.42 mm piston diameter with a 6.6:1 compression ratio.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\nFitment:\u003cbr\u003e\n1988 Yamaha YFS200 Blaster\u003cbr\u003e\n1989 Yamaha YFS200 Blaster\u003cbr\u003e\n1990 Yamaha YFS200 Blaster\u003cbr\u003e\n1991 Yamaha YFS200 Blaster\u003cbr\u003e\n1992 Yamaha YFS200 Blaster\u003cbr\u003e\n1993 Yamaha YFS200 Blaster\u003cbr\u003e\n1994 Yamaha YFS200 Blaster\u003cbr\u003e\n1995 Yamaha YFS200 Blaster\u003cbr\u003e\n1996 Yamaha YFS200 Blaster\u003cbr\u003e\n1997 Yamaha YFS200 Blaster\u003cbr\u003e\n1998 Yamaha YFS200 Blaster\u003cbr\u003e\n1999 Yamaha YFS200 Blaster\u003cbr\u003e\n2000 Yamaha YFS200 Blaster\u003cbr\u003e\n2001 Yamaha YFS200 Blaster\u003cbr\u003e\n2002 Yamaha YFS200 Blaster\u003cbr\u003e\n2003 Yamaha YFS200 Blaster\u003cbr\u003e\n2004 Yamaha YFS200 Blaster\u003cbr\u003e\n2005 Yamaha YFS200 Blaster\u003cbr\u003e\n2006 Yamaha YFS200 Blaster","brand":"NAMURA","offers":[{"title":"Default Title","offer_id":67559055130859,"sku":"186-40036","price":97.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/3882\/9547\/files\/dd77-572a583cd9540_eecc1684-52a9-4a0c-b585-2dc48c12be42.jpg?v=1790770044","url":"https:\/\/ctracingservices.com\/products\/namura-na-40003-6k-top-end-kit-for-1988-1997-yamaha-yfs200-blaster-67-42-mm-bore","provider":"Cascade Tire \u0026 Racing Services","version":"1.0","type":"link"}