{"product_id":"namura-na-40013k-hyperdryve-top-end-kit-for-yamaha-700cc-models","title":"NAMURA NA-40013K Hyperdryve Top End Kit for Yamaha 700cc Models","description":"\u003cp\u003eRestore dependable top-end performance with the NAMURA NA-40013K Hyperdryve Top End Kit, designed for select Yamaha 700cc powersports applications. This complete kit includes a piston, piston rings, wrist pin, wrist-pin clips, top-end bearing, and gasket kit for a convenient replacement solution. The kit is designed for standard-bore fitment and supports reliable engine service on compatible Yamaha Viking, Grizzly, and Raptor models.\u003c\/p\u003e\u003cp\u003eThe Hyperdryve piston features MOS2, or Teflon\/Molybdenum, coated skirts applied through a rolled-on process. This creates a strong coating bond that helps improve heat transfer, reduce friction, and minimize the risk of cold seizures. The machined smooth head reflects combustion heat and helps reduce carbon buildup, supporting piston protection and consistent engine operation.\u003c\/p\u003e\u003cp\u003eAnodized piston domes increase heat resistance and durability, while the hypereutectic casting process adds silicon for controlled expansion, improved wear resistance, and greater tolerance of elevated cylinder temperatures. These features make the NAMURA NA-40013K a practical choice for rebuilding the top end of compatible Yamaha engines while maintaining dependable fit and performance.\u003c\/p\u003e\u003cp\u003eFitment includes the 2014–2018 Yamaha YXM700 Viking, the 2014–2015 Yamaha YFM700G Grizzly Fi 4WD with IRS, and the 2015–2017 Yamaha YFM700R Raptor, subject to the applicable standard-bore configuration. Verify the model year, engine specifications, and existing piston and cylinder measurements before installation. Manufacturer part number: NA-40013K. Vendor part number: 186-4013.\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, clips, top-end bearing, and gasket kit\u003c\/li\u003e\n\u003cli\u003eMOS2-coated piston skirts: Rolled-on Teflon\/Molybdenum coating helps improve heat transfer, reduce friction, and minimize cold-seizure risk\u003c\/li\u003e\n\u003cli\u003eMachined smooth piston head: Reflects combustion heat and helps reduce carbon buildup for added piston protection\u003c\/li\u003e\n\u003cli\u003eAnodized piston dome: Improves heat resistance and durability compared with non-anodized piston designs\u003c\/li\u003e\n\u003cli\u003eHypereutectic casting process: Provides higher silicon content for controlled expansion, added wear resistance, and improved high-temperature durability\u003c\/li\u003e\n\u003cli\u003eStandard-bore fitment: Designed for select Yamaha 700cc Viking, Grizzly, and Raptor applications\u003c\/li\u003e\n\u003cli\u003eManufacturer part number: NAMURA NA-40013K\u003c\/li\u003e\n\u003cli\u003eVendor part number: 186-4013\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\nFitment:\u003cbr\u003e\n2014 Yamaha YFM700G Grizzly Fi 4WD [IRS]\u003cbr\u003e\n2014 Yamaha YXM700 Viking\u003cbr\u003e\n2015 Yamaha YFM700G Grizzly Fi 4WD [IRS]\u003cbr\u003e\n2015 Yamaha YFM700R Raptor\u003cbr\u003e\n2015 Yamaha YXM700 Viking\u003cbr\u003e\n2016 Yamaha YFM700R Raptor\u003cbr\u003e\n2016 Yamaha YXM700 Viking\u003cbr\u003e\n2017 Yamaha YFM700R Raptor\u003cbr\u003e\n2017 Yamaha YXM700 Viking\u003cbr\u003e\n2018 Yamaha YFM700R Raptor\u003cbr\u003e\n2018 Yamaha YXM700 Viking","brand":"NAMURA","offers":[{"title":"Default Title","offer_id":67558999851243,"sku":"186-4013","price":245.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/3882\/9547\/files\/3e46-5e99b7b06a8fb.jpg?v=1790769512","url":"https:\/\/ctracingservices.com\/products\/namura-na-40013k-hyperdryve-top-end-kit-for-yamaha-700cc-models","provider":"Cascade Tire \u0026 Racing Services","version":"1.0","type":"link"}