{"product_id":"namura-na-40019-2k-49-5-mm-0-50-mm-top-end-kit-for-yamaha-yfm125g-grizzly","title":"Namura NA-40019-2K 49.5 mm +0.50 mm Top End Kit for Yamaha YFM125G Grizzly","description":"\u003cp\u003eThe Namura NA-40019-2K Top End Kit is designed for Yamaha YFM125G Grizzly all-terrain vehicles from 2004 through 2013. This 49.5 mm +0.50 mm oversize kit features an 11:1 compression ratio and includes the piston, piston rings, wrist pin, retaining clips, top end bearing, and gasket kit needed for a complete top-end service. It is manufactured by Namura and supplied under vendor part number NA-40019-2K.\u003c\/p\u003e\u003cp\u003eFeature: MOS2 (Teflon\/Molybdenum) coated skirts use a rolled-on application process that creates a bond up to 10 times stronger than many spray-on coatings. The coating helps improve heat transfer, reduce friction, and minimize the risk of cold seizures. Feature: Machined smooth heads reflect combustion heat and help reduce carbon buildup, protecting the piston crown while supporting efficient engine operation.\u003c\/p\u003e\u003cp\u003eFeature: Anodized domes improve heat resistance and durability, with increased strength compared with non-anodized piston domes. Feature: The hypereutectic casting process adds silicon for controlled expansion, enhanced wear resistance, and improved durability at higher cylinder temperatures. The included components make this kit suitable for rebuilding the top end of compatible Yamaha Grizzly engines when cylinder preparation matches the specified oversize piston.\u003c\/p\u003e\u003cp\u003eFitment includes 2004-2013 Yamaha YFM125G Grizzly models with SRA suspension. Confirm the vehicle model, year, cylinder condition, and required oversize before installation. Professional installation is recommended, including proper piston ring gap, piston orientation, torque specifications, and gasket sealing procedures.\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\u003e49.5 mm +0.50 mm oversize piston with an 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 provides controlled expansion and enhanced wear resistance\u003c\/li\u003e\n\u003cli\u003eFits 2004-2013 Yamaha YFM125G Grizzly models with SRA suspension\u003c\/li\u003e\n\u003cli\u003eBrand: Namura\u003c\/li\u003e\n\u003cli\u003eManufacturer: Namura\u003c\/li\u003e\n\u003cli\u003eVendor part number: NA-40019-2K\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\nFitment:\u003cbr\u003e\n1989 Yamaha YFA1 Breeze 125\u003cbr\u003e\n1990 Yamaha YFA1 Breeze 125\u003cbr\u003e\n1991 Yamaha YFA1 Breeze 125\u003cbr\u003e\n1992 Yamaha YFA1 Breeze 125\u003cbr\u003e\n1993 Yamaha YFA1 Breeze 125\u003cbr\u003e\n1994 Yamaha YFA1 Breeze 125\u003cbr\u003e\n1995 Yamaha YFA1 Breeze 125\u003cbr\u003e\n1996 Yamaha YFA1 Breeze 125\u003cbr\u003e\n1997 Yamaha YFA1 Breeze 125\u003cbr\u003e\n1998 Yamaha YFA1 Breeze 125\u003cbr\u003e\n1999 Yamaha YFA1 Breeze 125\u003cbr\u003e\n2000 Yamaha YFA1 Breeze 125\u003cbr\u003e\n2001 Yamaha YFA1 Breeze 125\u003cbr\u003e\n2002 Yamaha YFA1 Breeze 125\u003cbr\u003e\n2003 Yamaha YFA1 Breeze 125\u003cbr\u003e\n2004 Yamaha YFA1 Breeze 125\u003cbr\u003e\n2004 Yamaha YFM125G Grizzly [SRA]\u003cbr\u003e\n2005 Yamaha YFM125G Grizzly [SRA]\u003cbr\u003e\n2006 Yamaha YFM125G Grizzly [SRA]\u003cbr\u003e\n2007 Yamaha YFM125G Grizzly [SRA]\u003cbr\u003e\n2008 Yamaha YFM125G Grizzly [SRA]\u003cbr\u003e\n2009 Yamaha YFM125G Grizzly [SRA]\u003cbr\u003e\n2010 Yamaha YFM125G Grizzly [SRA]\u003cbr\u003e\n2011 Yamaha YFM125G Grizzly [SRA]\u003cbr\u003e\n2012 Yamaha YFM125G Grizzly [SRA]\u003cbr\u003e\n2013 Yamaha YFM125G Grizzly [SRA]","brand":"NAMURA","offers":[{"title":"Default Title","offer_id":67558963413227,"sku":"186-40192","price":104.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/3882\/9547\/files\/dd77-572a583cd9540_685abb84-3811-4ff5-8332-e0996bcc286d.jpg?v=1790769422","url":"https:\/\/ctracingservices.com\/products\/namura-na-40019-2k-49-5-mm-0-50-mm-top-end-kit-for-yamaha-yfm125g-grizzly","provider":"Cascade Tire \u0026 Racing Services","version":"1.0","type":"link"}