{"product_id":"piston-kit-kawasaki-klf-250-bayou-os-0-75","title":"OS 0.75 Piston Kit for Kawasaki KLF 250 Bayou 2003 To 2011 OEM Replacement Quality Fits Bayou Models","description":"\u003cdiv\u003e\n\u003cp\u003eOS 0.75 oversize piston kit for the 228cc Bayou ATV family (2003–2011) restores peak compression and power after top-end wear. The kit features a 69.75 mm bore (0.75 mm oversize) and comes complete with a piston, rings, wrist pin and circlips for a ready-to-install rebuild. Designed to deliver factory-like reliability in off-road conditions, this top-end refresh helps restore lost performance and smooth, dependable power across the full 2003–2011 model span.\u003c\/p\u003e\n\u003cp\u003eWith MOS2-coated skirt technology and a cast aluminum alloy piston, this aftermarket replacement reduces friction, improves heat resistance, and promotes longer engine life under harsh trail, farm, or job-site duty cycles. Because it mirrors OEM-style dimensions, it installs cleanly without modifying the engine, delivering durable performance when you need to trust your ATV for demanding work or rough-terrain rides. This kit is a reliable choice for riders who demand restoring power and consistency without the OEM price tag.\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\u003eA1 (2003) – 2003 Bayou 250 (KLF250-A1)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKawasaki\u003c\/td\u003e\n\u003ctd\u003eKLF250 Bayou\u003c\/td\u003e\n\u003ctd\u003eA2 (2004) – 2004 Bayou 250 (KLF250-A2)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKawasaki\u003c\/td\u003e\n\u003ctd\u003eKLF250 Bayou\u003c\/td\u003e\n\u003ctd\u003eA3 (2005) – 2005 Bayou 250 (KLF250-A3)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKawasaki\u003c\/td\u003e\n\u003ctd\u003eKLF250 Bayou\u003c\/td\u003e\n\u003ctd\u003eA6F (2006) – 2006 Bayou 250 (KLF250A6F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKawasaki\u003c\/td\u003e\n\u003ctd\u003eKLF250 Bayou\u003c\/td\u003e\n\u003ctd\u003eA7F (2007) – 2007 Bayou 250 (KLF250A7F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKawasaki\u003c\/td\u003e\n\u003ctd\u003eKLF250 Bayou\u003c\/td\u003e\n\u003ctd\u003eA8F (2008) – 2008 Bayou 250 (KLF250A8F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKawasaki\u003c\/td\u003e\n\u003ctd\u003eKLF250 Bayou\u003c\/td\u003e\n\u003ctd\u003eA9F (2009) – 2009 Bayou 250 (KLF250A9F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKawasaki\u003c\/td\u003e\n\u003ctd\u003eKLF250 Bayou\u003c\/td\u003e\n\u003ctd\u003eAAF (2010) – 2010 Bayou 250 (KLF250AAF)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKawasaki\u003c\/td\u003e\n\u003ctd\u003eKLF250 Bayou\u003c\/td\u003e\n\u003ctd\u003eABF (2011) – 2011 Bayou 250 (KLF250ABF)\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\u003e13001-1654, 13001-1663, 13002-1004, 13008-1209, 92033-1161\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003ePiston Kit OS 0.75 oversize (69.75 mm bore) with piston, rings, wrist pin and circlips\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), 228cc air-cooled four-stroke single\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eCast aluminum alloy with MOS2-coated skirt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBore Size\u003c\/td\u003e\n\u003ctd\u003e69.75 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOversize\u003c\/td\u003e\n\u003ctd\u003e+0.75 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStroke\u003c\/td\u003e\n\u003ctd\u003e61 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisplacement\u003c\/td\u003e\n\u003ctd\u003e228 cc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEngine Type\u003c\/td\u003e\n\u003ctd\u003eAir-Cooled 4-Stroke SOHC Single Cylinder\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompression Ratio\u003c\/td\u003e\n\u003ctd\u003e8.9:1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCarburetor\u003c\/td\u003e\n\u003ctd\u003eMikuni VM24SS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStarting\u003c\/td\u003e\n\u003ctd\u003eElectric and Recoil\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKit Contents\u003c\/td\u003e\n\u003ctd\u003ePiston, Rings, Wrist Pin, Circlips\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\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\u003e13001-1654\u003c\/td\u003e\n\u003ctd\u003eKawasaki OEM\u003c\/td\u003e\n\u003ctd\u003eStandard bore piston reference\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e13001-1663\u003c\/td\u003e\n\u003ctd\u003eKawasaki OEM\u003c\/td\u003e\n\u003ctd\u003eStandard bore piston reference\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e13002-1004\u003c\/td\u003e\n\u003ctd\u003eKawasaki OEM\u003c\/td\u003e\n\u003ctd\u003ePiston pin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e13008-1209\u003c\/td\u003e\n\u003ctd\u003eKawasaki OEM\u003c\/td\u003e\n\u003ctd\u003ePiston ring set\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e92033-1161\u003c\/td\u003e\n\u003ctd\u003eKawasaki OEM\u003c\/td\u003e\n\u003ctd\u003eCirclips\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 kit includes the essential components for a proper top-end refresh.\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\u003cli\u003e\u003cb\u003eCirclips\u003c\/b\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eRelated parts such as gaskets or seals are not included.\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 Oversize 0.75 mm piston matches a 69.75 mm bore for precise ring sealing and cylinder clearance, ensuring reliable top-end performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eOEM Cross-Reference:\u003c\/b\u003e Original part references are listed to help verify compatibility across model years and trims.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eMOS2-coated skirt:\u003c\/b\u003e Reduces friction, lowers heat buildup, and improves startup reliability under dusty, hot, off-road use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePremium Cast Aluminum:\u003c\/b\u003e Durable, lightweight piston material designed for repeated heat cycling and harsh conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eComplete Top-End Refresh:\u003c\/b\u003e Includes piston, rings, wrist pin and circlips for a full rebuild kit, saving time and avoiding missing parts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eFactory-Style Dimensions:\u003c\/b\u003e Maintains OEM-like tolerances to preserve original performance and reliability without paying OEM prices.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation Notes:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003ePre-Check Bore\u003c\/b\u003e: Confirm cylinder bore is 69.75 mm before installation; any out-of-tolerance wear may require honing or re-boring as per service manual.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eRings \u0026amp; Gaps\u003c\/b\u003e: Check top and second ring end gaps according to the service manual; replace if out of specification to ensure proper sealing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eLubrication\u003c\/b\u003e: Apply light engine assembly lube to the piston skirts and rings during installation to prevent dry starts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eWrist Pin \u0026amp; Circlips\u003c\/b\u003e: Install wrist pin with proper end clearance and seat circlips securely in grooves; verify with a small twist to ensure they won’t back out during operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eOrientation \u0026amp; Clearances\u003c\/b\u003e: Align piston orientation marks as indicated by OEM drawings; verify piston-to-wall clearance with feeler gauges if required by service manual.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eClean Assembly\u003c\/b\u003e: Thoroughly clean the cylinder, head and oil passages; remove all debris to avoid scoring or oil starvation on first startup.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy Upgrade?\u003c\/h3\u003e\n\u003cp\u003eWorn piston assemblies compromise compression, reduce power, and can accelerate cylinder wear or cause overheating under load. Upgrading to the OS 0.75 oversize kit restores ring sealing, improves heat management, and brings the engine back toward factory-like performance, giving you reliable power on the trail or job site.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"ATV City","offers":[{"title":"Default Title","offer_id":57319257964918,"sku":"190.04124","price":85.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0971\/0302\/0406\/files\/image_2026-02-26_000418579.png?v=1774886125","url":"https:\/\/dgtagri.co.uk\/products\/piston-kit-kawasaki-klf-250-bayou-os-0-75","provider":"DGT Agri","version":"1.0","type":"link"}