{"product_id":"namura-top-end-kit-for-yamaha-yfm700-grizzly-and-raptor-101-98-mm-9-2-1-compression-part-na-40012-bk","title":"Namura Top End Kit for Yamaha YFM700 Grizzly and Raptor, 101.98 mm, 9.2:1 Compression, Part NA-40012-BK","description":"\u003cp\u003eThe Namura NA-40012-BK Top End Kit is designed for select Yamaha YFM700 ATV applications, including the Grizzly Fi 4WD with IRS and the YFM700R Raptor. This 101.98 mm replacement kit is engineered for reliable top-end service and includes the essential components needed to refresh the piston assembly and cylinder head sealing surfaces. The kit includes a piston, piston rings, wrist pin, wrist-pin clips, top-end bearing, and gasket kit.\u003c\/p\u003e\u003cp\u003eDesigned for durability and consistent performance, the piston features MOS2, or Teflon\/molybdenum, coated skirts. The 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, while the anodized dome improves heat resistance and durability. The hypereutectic casting process adds silicon for reduced expansion, improved wear resistance, and dependable operation at elevated cylinder temperatures.\u003c\/p\u003e\u003cp\u003eThis Namura top end kit has a 9.2:1 compression ratio and is intended for compatible Yamaha engines using the specified 101.98 mm piston size. Fitment includes the 2007–2013 Yamaha YFM700G Grizzly Fi 4WD with IRS and the 2006–2008 Yamaha YFM700R Raptor. Verify the year, model, engine configuration, and required piston size before installation. The manufacturer part number is NA-40012-BK, and the vendor part number is 186-4012B.\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\u003e101.98 mm piston size with a 9.2:1 compression ratio for select Yamaha YFM700 applications\u003c\/li\u003e\n\u003cli\u003eMOS2 Teflon\/molybdenum-coated piston skirts help reduce friction, improve heat transfer, and minimize cold-seizure risk\u003c\/li\u003e\n\u003cli\u003eMachined smooth piston heads help reflect combustion heat and reduce carbon buildup\u003c\/li\u003e\n\u003cli\u003eAnodized piston domes provide increased heat resistance and durability\u003c\/li\u003e\n\u003cli\u003eHypereutectic casting process provides reduced expansion and improved wear resistance\u003c\/li\u003e\n\u003cli\u003eFits 2007–2013 Yamaha YFM700G Grizzly Fi 4WD with IRS\u003c\/li\u003e\n\u003cli\u003eFits 2006–2008 Yamaha YFM700R Raptor\u003c\/li\u003e\n\u003cli\u003eBrand: Namura\u003c\/li\u003e\n\u003cli\u003eManufacturer part number: NA-40012-BK\u003c\/li\u003e\n\u003cli\u003eVendor part number: 186-4012B\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\nFitment:\u003cbr\u003e\n2006 Yamaha YFM700R Raptor\u003cbr\u003e\n2007 Yamaha YFM700G Grizzly Fi 4WD [IRS]\u003cbr\u003e\n2007 Yamaha YFM700R Raptor\u003cbr\u003e\n2008 Yamaha YFM700G Grizzly Fi 4WD [IRS]\u003cbr\u003e\n2008 Yamaha YFM700R Raptor\u003cbr\u003e\n2008 Yamaha YXR700F Rhino 700\u003cbr\u003e\n2009 Yamaha YFM700G Grizzly Fi 4WD [IRS]\u003cbr\u003e\n2009 Yamaha YFM700R Raptor\u003cbr\u003e\n2009 Yamaha YXR700F Rhino 700\u003cbr\u003e\n2010 Yamaha YFM700G Grizzly Fi 4WD [IRS]\u003cbr\u003e\n2010 Yamaha YFM700R Raptor\u003cbr\u003e\n2011 Yamaha YFM700G Grizzly Fi 4WD [IRS]\u003cbr\u003e\n2011 Yamaha YFM700R Raptor\u003cbr\u003e\n2011 Yamaha YXR700F Rhino 700\u003cbr\u003e\n2012 Yamaha YFM700G Grizzly Fi 4WD [IRS]\u003cbr\u003e\n2012 Yamaha YFM700R Raptor\u003cbr\u003e\n2012 Yamaha YXR700F Rhino 700\u003cbr\u003e\n2013 Yamaha YFM700G Grizzly Fi 4WD [IRS]\u003cbr\u003e\n2013 Yamaha YFM700R Raptor\u003cbr\u003e\n2013 Yamaha YXR700F Rhino 700\u003cbr\u003e\n2014 Yamaha YFM700R Raptor\u003cbr\u003e\n2015 Yamaha YFM700R Raptor\u003cbr\u003e\n2016 Yamaha YFM700R Raptor","brand":"NAMURA","offers":[{"title":"Default Title","offer_id":67559008534763,"sku":"186-4012B","price":227.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/3882\/9547\/files\/dd77-572a583cd9540_39149587-1fda-4541-a033-6478fc032245.jpg?v=1790769537","url":"https:\/\/ctracingservices.com\/products\/namura-top-end-kit-for-yamaha-yfm700-grizzly-and-raptor-101-98-mm-9-2-1-compression-part-na-40012-bk","provider":"Cascade Tire \u0026 Racing Services","version":"1.0","type":"link"}