{"product_id":"piston-kit-kawasaki-klf-250-bayou-os-1-00","title":"Piston Kit For Kawasaki KLF 250 Bayou OS 1.00 OEM Replacement Fits 2003 To 2011 Quality","description":"\u003cdiv\u003e\n\u003cp\u003eOS 1.00 Piston Kit for Kawasaki KLF250 Bayou (2003–2011) is an oversize top-end rebuild solution designed to restore compression and revitalize power in dusty, off-road conditions. The 1.00 mm oversize bore provides rebuild-ready material and precise machining for optimal sealing and longevity, making it ideal for a full top-end rebuild or restoring lost power on the KLF250 Bayou. This aftermarket replacement piston kit is engineered to meet or exceed Kawasaki engine standards, delivering reliable performance when the trail or farm demands it.\u003c\/p\u003e\n\u003cp\u003eUnique value comes from a purpose-built approach to the Bayou’s single-cylinder, air-cooled engine. The OS 1.00 kit targets wear-and-tear issues like ring land wear, piston skirt scuffing, and degraded sealing that reduce compression and throttle response. With a high-quality alloy piston, rings, wrist pin, and circlips included, this kit provides a reliable, install-ready solution designed for demanding off-road use and long-term durability in trail and farm environments.\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\u003eKawasaki\u003c\/td\u003e\n\u003ctd\u003eKLF250 Bayou\u003c\/td\u003e\n\u003ctd\u003e2003–2011\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKawasaki\u003c\/td\u003e\n\u003ctd\u003eKLF250 Bayou A1 (2003)\u003c\/td\u003e\n\u003ctd\u003e2003\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKawasaki\u003c\/td\u003e\n\u003ctd\u003eKLF250 Bayou A2 (2004)\u003c\/td\u003e\n\u003ctd\u003e2004\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKawasaki\u003c\/td\u003e\n\u003ctd\u003eKLF250 Bayou A3 (2005)\u003c\/td\u003e\n\u003ctd\u003e2005\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKawasaki\u003c\/td\u003e\n\u003ctd\u003eKLF250 Bayou A6F (2006)\u003c\/td\u003e\n\u003ctd\u003e2006\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKawasaki\u003c\/td\u003e\n\u003ctd\u003eKLF250 Bayou A7F (2007)\u003c\/td\u003e\n\u003ctd\u003e2007\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKawasaki\u003c\/td\u003e\n\u003ctd\u003eKLF250 Bayou A8F (2008)\u003c\/td\u003e\n\u003ctd\u003e2008\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKawasaki\u003c\/td\u003e\n\u003ctd\u003eKLF250 Bayou A9F (2009)\u003c\/td\u003e\n\u003ctd\u003e2009\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKawasaki\u003c\/td\u003e\n\u003ctd\u003eKLF250 Bayou AAF (2010)\u003c\/td\u003e\n\u003ctd\u003e2010\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKawasaki\u003c\/td\u003e\n\u003ctd\u003eKLF250 Bayou ABF (2011)\u003c\/td\u003e\n\u003ctd\u003e2011\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\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\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003ePiston Kit (Oversize 1.00)\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\u003eKawasaki KLF250 Bayou (2003–2011)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eHigh-quality alloy piston with rings, wrist pin, and circlips\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOversize\u003c\/td\u003e\n\u003ctd\u003e1.00 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBore Size\u003c\/td\u003e\n\u003ctd\u003e70.00 mm (OS 1.00) – requires cylinder bore prep and compatible rings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStroke\u003c\/td\u003e\n\u003ctd\u003e61.0 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePiston Pin Diameter\u003c\/td\u003e\n\u003ctd\u003e16 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\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: 20.1334%;\"\u003ePart Number\u003c\/th\u003e\n\u003cth style=\"width: 24.4514%;\"\u003eBrand \/ Type\u003c\/th\u003e\n\u003cth style=\"width: 54.6931%;\"\u003eCross-Reference Notes\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 20.1334%;\"\u003e13001-1663\u003c\/td\u003e\n\u003ctd style=\"width: 24.4514%;\"\u003eKawasaki OEM Piston\u003c\/td\u003e\n\u003ctd style=\"width: 54.6931%;\"\u003ePiston, Standard Bore; common reference for 2003–2011 Bayou kits\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 20.1334%;\"\u003e13001-1654\u003c\/td\u003e\n\u003ctd style=\"width: 24.4514%;\"\u003eKawasaki OEM Piston\u003c\/td\u003e\n\u003ctd style=\"width: 54.6931%;\"\u003eAlternate standard-bore piston reference\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 20.1334%;\"\u003e13002-1004\u003c\/td\u003e\n\u003ctd style=\"width: 24.4514%;\"\u003eKawasaki OEM Piston Pin\u003c\/td\u003e\n\u003ctd style=\"width: 54.6931%;\"\u003ePiston pin reference for stock\/oversize builds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 20.1334%;\"\u003e13008-1209\u003c\/td\u003e\n\u003ctd style=\"width: 24.4514%;\"\u003eKawasaki OEM Rings\u003c\/td\u003e\n\u003ctd style=\"width: 54.6931%;\"\u003eRing set reference for stock\/oversize kits\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 20.1334%;\"\u003e92033-1161\u003c\/td\u003e\n\u003ctd style=\"width: 24.4514%;\"\u003eKawasaki OEM Circlips\u003c\/td\u003e\n\u003ctd style=\"width: 54.6931%;\"\u003ePiston circlips reference\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 20.1334%;\"\u003e50-252\u003c\/td\u003e\n\u003ctd style=\"width: 24.4514%;\"\u003eWSM (Aftermarket Replacement OEM Cross-Ref)\u003c\/td\u003e\n\u003ctd style=\"width: 54.6931%;\"\u003eStock bore piston kit cross-ref compatible with KLF250 Bayou; includes piston, rings, pin, clips\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003c\/h3\u003e\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cp\u003eThis OS 1.00 piston kit includes everything you need to complete a top-end rebuild on the Kawasaki KLF250 Bayou.\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\u003ePiston Wrist Pin\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003eCirclips\u003c\/b\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cem\u003eNote: Cylinder head gaskets, base gaskets, and other surrounding gaskets are not included unless specified in the kit.\u003c\/em\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 for the Kawasaki KLF250 Bayou engine to simplify installation and maintain correct timing and clearance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eOEM Cross-Reference:\u003c\/b\u003e Includes established cross-references to factory Kawasaki parts for compatibility and future servicing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePremium Materials:\u003c\/b\u003e High-quality alloy piston with durable rings, wrist pin, and circlips built for tough off-road conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eOS 1.00 Oversize for Power Restoration:\u003c\/b\u003e Restores lost compression and throttle response by rebuilding the top end with a true oversize bore.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eCumulative Reliability:\u003c\/b\u003e Designed to endure dusty trails and farm work where engine temperatures and debris are constant threats.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation Notes:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBefore install, verify the cylinder bore is compatible with an OS 1.00 kit and prepare the bore to accept a 70.00 mm piston.\u003c\/li\u003e\n\u003cli\u003eInspect the cylinder wall for scoring or damage; repair or chamfer damaged areas as needed before fitting the oversize piston.\u003c\/li\u003e\n\u003cli\u003eLubricate the piston, rings, and wrist pin thoroughly before assembly; ensure ring end gaps are within manual specifications after install.\u003c\/li\u003e\n\u003cli\u003eUse a proper ring compressor to slide the piston into the bore without damaging rings or scoring the bore.\u003c\/li\u003e\n\u003cli\u003eInstall the wrist pin and circlips with correct orientation; confirm clips are fully seated to prevent pin migration.\u003c\/li\u003e\n\u003cli\u003eCheck all gaskets and mating surfaces; reuse or replace gaskets per service manual to ensure a proper seal on reassembly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy Upgrade?\u003c\/h3\u003e\n\u003cp\u003eRunning a worn-out top end on a KLF250 Bayou compromises compression, fuel efficiency, and reliability in rugged, off-road conditions. This OS 1.00 piston kit restores compression and throttle response, delivering dependable performance for trail riding and farm work by rebuilding the engine with properly sized, durable components.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"ATV City","offers":[{"title":"Default Title","offer_id":57319257997686,"sku":"190.04125","price":69.33,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0971\/0302\/0406\/files\/image_2026-02-26_000326023.png?v=1774886126","url":"https:\/\/dgtagri.co.uk\/products\/piston-kit-kawasaki-klf-250-bayou-os-1-00","provider":"DGT Agri","version":"1.0","type":"link"}