{"product_id":"piston-kit-yamaha-yfm-600-f-grizzly-os-0-50","title":"Piston Kit OS 0.50 For Yamaha YFM 600F Grizzly 1998-2001 OEM Replacement 3TB-11636-00-00","description":"\u003cdiv\u003e\n\u003cp\u003eRestore peak compression and revitalize your Yamaha YFM 600F Grizzly with this OS 0.50 oversize piston kit. Designed for 1998–2001 models, this aftermarket replacement brings updated bore sizing to compensate for wear while maintaining reliable top-end performance under trail, farm, and work-site conditions. The kit includes a precision-matched \u003cb\u003episton\u003c\/b\u003e, \u003cb\u003erings\u003c\/b\u003e, and \u003cb\u003ewrist pin\u003c\/b\u003e, delivering consistent combustion and smoother power delivery across rebuilds. Built to align with the Grizzly’s demanding 600cc engine tolerances, it’s a practical, cost-effective upgrade that keeps your ATV running strong.\u003c\/p\u003e\n\u003cp\u003eOver the years, bore wear, ring land loss, and piston-pin play can erode compression and throttle response. This OS 0.50 oversize replacement targets bore wear and ring-seating limitations, helping restore combustion efficiency and power without a full OEM price tag. Designed for durability in tough trail and farm work, this aftermarket kit provides dependable top-end refresh to keep you moving when it matters most.\u003c\/p\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\u003eYFM600F Grizzly\u003c\/td\u003e\n\u003ctd\u003e1998–2001\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eYFM600FG Grizzly 4x4\u003c\/td\u003e\n\u003ctd\u003e1998–2001\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eYFM600FWA Grizzly 4x4\u003c\/td\u003e\n\u003ctd\u003e1998–1999\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eYFM Grizzly 600 (YFM600F)\u003c\/td\u003e\n\u003ctd\u003e1998–2001\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cbr\u003e\u003c\/h3\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\u003e3TB-11636-00-00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003ePiston Kit OS 0.50 oversize\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\u003ePiston kit for Yamaha YFM 600F Grizzly 1998–2001\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOversize\u003c\/td\u003e\n\u003ctd\u003eOS 0.50 (0.50 mm oversize)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded Components\u003c\/td\u003e\n\u003ctd\u003e\n\u003cb\u003ePiston\u003c\/b\u003e, \u003cb\u003eRings\u003c\/b\u003e, \u003cb\u003eWrist Pin\u003c\/b\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cbr\u003e\u003c\/h3\u003e\n\u003ch3\u003eOEM \u0026amp; Aftermarket Cross-Reference Information\u003c\/h3\u003e\n\u003ctable style=\"width: 100%;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 20.7581%;\"\u003ePart Number\u003c\/th\u003e\n\u003cth style=\"width: 19.6558%;\"\u003eBrand \/ Type\u003c\/th\u003e\n\u003cth style=\"width: 58.8641%;\"\u003eCross-Reference Notes\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 20.7581%;\"\u003e3TB-11636-00-00\u003c\/td\u003e\n\u003ctd style=\"width: 19.6558%;\"\u003eYamaha OEM\u003c\/td\u003e\n\u003ctd style=\"width: 58.8641%;\"\u003eOriginal piston kit reference for YFM 600F Grizzly 1998–2001; OS 0.50 oversize option offered by aftermarket lines.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 20.7581%;\"\u003ePK1059\u003c\/td\u003e\n\u003ctd style=\"width: 19.6558%;\"\u003eWiseco Top End Kit\u003c\/td\u003e\n\u003ctd style=\"width: 58.8641%;\"\u003eYFM600FG\/Grizzly 1998–2001; Bore +2.00 mm; not a direct OS 0.50 match, but a common aftermarket cross-reference for these models. Verify bore before mixing OS sizes.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 20.7581%;\"\u003ePK1057\u003c\/td\u003e\n\u003ctd style=\"width: 19.6558%;\"\u003eWiseco Top End Kit\u003c\/td\u003e\n\u003ctd style=\"width: 58.8641%;\"\u003eStandard bore option for YFM600F\/Grizzly 1998–2001; use when bore is within stock dimensions.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cbr\u003e\u003c\/h3\u003e\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cp\u003eA concise top-end refresh kit for a complete rebuild of the YFM 600F Grizzly cylinder assembly. The box includes the following components:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cb\u003ePiston\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003eRings\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003eWrist Pin\u003c\/b\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eNote: Related parts such as circlips or gaskets are not included unless specified.\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 Engineered to drop into Yamaha YFM 600F Grizzly 1998–2001 with OS 0.50 oversize, minimizing modification needs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eOEM Cross-Reference:\u003c\/b\u003e Aligns with Yamaha OEM reference 3TB-11636-00-00, offering familiar footprint and timing characteristics.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePremium-Centric Design Approach:\u003c\/b\u003e Built to restore compression and maintain reliable combustion across varied riding conditions, from trails to work duties.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePerformance Restoration:\u003c\/b\u003e Restores power, throttle response, and top-end efficiency after bore wear and ring erosion.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eAll-In-One Top End Solution:\u003c\/b\u003e Includes piston, rings, and wrist pin for a complete, ready-to-install overhaul in one box.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eCost-Effective Alternative:\u003c\/b\u003e Delivers genuine-top-end replacement capability without OEM pricing, enabling quicker, budget-friendly rebuilds.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation Notes:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eVerify bore condition and measure with proper gauges before selecting OS 0.50; ensure the cylinder bore is within oversize specifications for a reliable seal.\u003c\/li\u003e\n\u003cli\u003eThoroughly clean the piston boss, ring lands, and bore; inspect scoring and taper before assembly.\u003c\/li\u003e\n\u003cli\u003eInstall the top-end rings with correct orientation and staggered gaps per typical service manual guidelines; ensure gaps are within spec for your engine.\u003c\/li\u003e\n\u003cli\u003eLubricate the piston, rings, and wrist pin with assembly lube or clean engine oil before final assembly to reduce initial wear during first start.\u003c\/li\u003e\n\u003cli\u003eFit the wrist pin and secure with the proper retaining clips; verify clip seating and freedom of motion for the piston.\u003c\/li\u003e\n\u003cli\u003eTorque all applicable fasteners to the engine service manual specifications and perform a careful break-in procedure to seat rings and bearing surfaces properly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy Upgrade?\u003c\/h3\u003e\n\u003cp\u003eRunning a worn piston kit degrades compression, throttle response, and overall reliability, especially under load or in demanding terrain. This OS 0.50 oversize replacement restores proper seal and consistent combustion, helping your YFM 600F Grizzly regain power and dependability for trail, farm, and work duties.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"ATV City","offers":[{"title":"Default Title","offer_id":57319261536630,"sku":"190.40007-2","price":96.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0971\/0302\/0406\/files\/image_2026-02-25_211824144.png?v=1774886192","url":"https:\/\/dgtagri.co.uk\/products\/piston-kit-yamaha-yfm-600-f-grizzly-os-0-50","provider":"DGT Agri","version":"1.0","type":"link"}