{"product_id":"piston-ring-kit-yamaha-yfm-yxr-450-os-0-50-2003-2014","title":"OS 0.50 Piston Ring Kit For Yamaha YFM450 YXR450 Engines 2003 To 2014 ATV UTV OEM Quality","description":"\u003cdiv\u003eThis 0.50 mm oversize piston ring kit is a three-ring set designed for high-hour 450cc four-stroke ATV\/UTV engines from 2003 through 2014. It restores peak compression and crisp throttle response by renewing worn ring lands, helping to curb oil consumption and restore power on rugged trails or farm routes. As an aftermarket replacement, it delivers OEM-like sealing performance and durable wear resistance at a value-driven price point. This aftermarket kit targets common wear issues caused by long-term off-road use—ring erosion, blow-by, and oil fouling—that creep into 450cc engines under tough conditions. It provides a direct-fit solution with standard coatings and proven materials, giving riders a dependable rebuild option that supports steady, reliable power on every ride.\n\u003ch3\u003e\u003c\/h3\u003e\n\u003ch3\u003eComprehensive Vehicle Fitment\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eManufacturer\u003c\/th\u003e\n\u003cth\u003eModels \/ Series\u003c\/th\u003e\n\u003cth\u003eYears \/ Details\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eYFM450FA\u003c\/td\u003e\n\u003ctd\u003e2003-2006\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eYFM450FG\u003c\/td\u003e\n\u003ctd\u003e2007-2014\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eYFM450FX\u003c\/td\u003e\n\u003ctd\u003e2006-2010\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eYXR450F\u003c\/td\u003e\n\u003ctd\u003e2006-2009\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eCompatibility notes based on OEM references and widely used aftermarket listings confirm fitment across the popular 450cc ATV\/UTV platforms in the 2003–2014 window.\u003c\/p\u003e\n\u003ch3\u003eProduct Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eAttribute\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOEM Reference Part Numbers\u003c\/td\u003e\n\u003ctd\u003e5ND-11605-00-00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003ePiston Ring Set\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eAftermarket Replacement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eYFM450FA\/YFM450FG\/YFM450FX\/YXR450F (2003-2014)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOversize\u003c\/td\u003e\n\u003ctd\u003e0.50 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRing Count\u003c\/td\u003e\n\u003ctd\u003e3 rings (Top compression ring, Second compression ring, Oil control ring)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eSteel alloy \/ cast iron substrate with standard ring coatings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eCross-reference context: the OEM Yamaha part number 5ND-11605-00-00 is widely cited for these models, with aftermarket cross-references aligning on the same OS 0.50 sizing and three-ring design.\u003c\/p\u003e\n\u003ch3\u003eOEM \u0026amp; Aftermarket Cross-Reference Information\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003cth\u003eBrand \/ Type\u003c\/th\u003e\n\u003cth\u003eCross-Reference Notes\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e5ND-11605-00-00\u003c\/td\u003e\n\u003ctd\u003eAftermarket Replacement\u003c\/td\u003e\n\u003ctd\u003eOEM Yamaha part number; compatible with Yamaha YFM450FA\/FG\/FX and YXR450F engines; oversize 0.50 mm kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eThis cross-reference aligns the OEM reference with reliable aftermarket options that maintain correct dimensions and sealing performance for the listed models.\u003c\/p\u003e\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cp\u003eThis kit includes the essential piston rings required to rebuild the piston assembly for the listed Yamaha 450 engines:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cb\u003eTop Compression Ring\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003eSecond Compression Ring\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003eOil Control Ring\u003c\/b\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eNote: Gasket sets, circlips, and piston pins are not included unless specified separately.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3\u003eWhy Choose This Aftermarket Replacement?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eDirect-Fit Compatibility:\u003c\/b\u003e Precisely sized 0.50 mm rings to fit the listed 450cc engines without modifications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eOEM Cross-Reference:\u003c\/b\u003e Backed by the OEM part number 5ND-11605-00-00 for reliable dimensions and fitment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePremium Materials (engine-grade):\u003c\/b\u003e Built from durable steel alloy\/cast iron substrates designed to withstand combustion heat and wear.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePerformance Restoration:\u003c\/b\u003e Restores compression, reduces blow-by, and helps curb oil consumption for crisp throttle response and stronger power delivery.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eCost-Effective Alternative:\u003c\/b\u003e A value-driven option that delivers OEM-standard performance outside of dealer pricing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eLong-Term Reliability:\u003c\/b\u003e Engineered for rugged off-road use, helping maintain service intervals and reliability on trails and farms.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation Notes:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThoroughly inspect the piston and bore for wear; replace if bore is scored or out of round before installing new rings.\u003c\/li\u003e\n\u003cli\u003eClean the ring grooves and piston lands carefully; remove all carbon and debris to ensure proper seating.\u003c\/li\u003e\n\u003cli\u003eOrient rings correctly: top compression ring with the marked side facing upward; install the oil control ring with its dampener\/rails oriented per the groove design.\u003c\/li\u003e\n\u003cli\u003eCheck ring end gaps using a feeler gauge and ensure gaps meet manufacturer specs for the specific bore size.\u003c\/li\u003e\n\u003cli\u003eLightly lubricate the rings and piston with clean engine oil before assembly to prevent dry start on initial startup.\u003c\/li\u003e\n\u003cli\u003eAfter installation, perform a careful break-in procedure per the engine’s service manual, avoiding extended high-RPM operation for the first hours of runtime.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy Upgrade?\u003c\/h3\u003e\n\u003cp\u003eRunning a worn piston-ring set in these 450cc engines leads to loss of compression, higher oil consumption, and diminished throttle response. This replacement restores sealing performance, improves power and consistency, and helps protect the engine from long-term wear by renewing the critical ring surfaces and land interfaces.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"ATV City","offers":[{"title":"Default Title","offer_id":57319264747894,"sku":"192.04893","price":24.12,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0971\/0302\/0406\/files\/image_2026-02-25_144748678.png?v=1774886126","url":"https:\/\/dgtagri.co.uk\/products\/piston-ring-kit-yamaha-yfm-yxr-450-os-0-50-2003-2014","provider":"DGT Agri","version":"1.0","type":"link"}