{"product_id":"piston-kit-kawasaki-klf-kef-kvf-300-os-1-50","title":"OS 1.50 Piston Kit For Kawasaki KLF 300 KEF 300 KVF 300 ATV Models OEM Replacement","description":"\u003cdiv\u003e\n\u003cp\u003eOS 1.50 Piston Kit for Kawasaki KLF 300 Bayou, KEF 300 Lakota, and KVF 300 Prairie ATVs is engineered to restore compression and reclaim lost power across the 290cc powerplants in the KLF\/KEF\/KVF family. The oversize 1.50 mm bore yields a 77.50 mm diameter, delivering a true 290cc displacement for crisper throttle response and improved high‑end performance while maintaining a reliable seal. This kit is designed to meet or exceed Kawasaki engine standards, providing a durable, long‑lasting rebuild option for trail and farm duty. OEM reference part number 13001-1430 ensures precise cross‑compatibility across the KLF\/KEF\/KVF 300 family.\u003c\/p\u003e\n\u003cp\u003eBeyond merely replacing worn parts, this OS 1.50 piston kit offers a tangible performance improvement for riders facing compression loss, low-end stumble, or reduced top speed from an aging top end. The increased displacement helps restore peak power without resorting to a complete engine rebuild, giving you reliable, repeatable performance in demanding conditions like mud, sand, or steep climbs. As an aftermarket replacement designed to fit the Kawasaki 300 line, it provides a cost‑effective path to restore trail‑ready power and durability.\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\u003eKLF 300 Bayou\u003c\/td\u003e\n\u003ctd\u003e1986–2004\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKawasaki\u003c\/td\u003e\n\u003ctd\u003eKEF 300 Lakota\u003c\/td\u003e\n\u003ctd\u003e1995–2003\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKawasaki\u003c\/td\u003e\n\u003ctd\u003eKVF 300 Prairie\u003c\/td\u003e\n\u003ctd\u003e1999–2002\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eFitment data drawn from model ranges across the Kawasaki 300 family.\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\u003e13001-1430\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003ePiston Kit OS 1.50 (bore 77.50 mm, oversize +1.50 mm)\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 KLF 300, KEF 300, KVF 300 engines\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAluminum Alloy \/ Forged\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBore Size\u003c\/td\u003e\n\u003ctd\u003e77.50 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStroke\u003c\/td\u003e\n\u003ctd\u003e64.00 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisplacement\u003c\/td\u003e\n\u003ctd\u003e290 cc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompression Ratio\u003c\/td\u003e\n\u003ctd\u003eApprox. 8.6:1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePiston Oversize\u003c\/td\u003e\n\u003ctd\u003e+1.50 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eSpecification notes reflect oversize 1.50 mm bore, 77.50 mm size, and 290 cc displacement with an ~8.6:1 compression ratio common to this family, based on official oversize piston data for the Kawasaki 300 lineup.\u003c\/p\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: 17.3285%;\"\u003ePart Number\u003c\/th\u003e\n\u003cth style=\"width: 23.066%;\"\u003eBrand \/ Type\u003c\/th\u003e\n\u003cth style=\"width: 58.8834%;\"\u003eCross-Reference Notes\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 17.3285%;\"\u003e13001-1430\u003c\/td\u003e\n\u003ctd style=\"width: 23.066%;\"\u003eAftermarket Replacement\u003c\/td\u003e\n\u003ctd style=\"width: 58.8834%;\"\u003eOEM Kawasaki piston reference; direct aftermarket equivalent with OS 1.50 bore for KLF\/KEF\/KVF 300 models.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eCross-reference data anchors to the OEM Kawasaki reference 13001-1430 and identify the compatible aftermarket replacement for the 1.50 mm oversize kit.\u003c\/p\u003e\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cp\u003eThis piston kit includes the essential components to complete a top‑end rebuild for the Kawasaki 300 family. The box contents typically include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cb\u003ePiston\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eRings\u003c\/b\u003e (set)\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePiston Pin\u003c\/b\u003e (wrist pin)\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003eCirclips\u003c\/b\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eNotes: Gasket kit and other top-end components are not included in this kit; verify what you already have or plan to purchase separately.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eContents and packaging reflect typical aftermarket piston kit configurations (rings, wrist pin, and circlips are standard inclusions in most aftermarket piston kits).\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 Specifically engineered for Kawasaki KLF 300, KEF 300, and KVF 300 engines with an OS 1.50 bore, ensuring straightforward installation and reliable seal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eOEM Cross-Reference:\u003c\/b\u003e Uses the Kawasaki OEM reference framework (13001-1430) to simplify sourcing and compatibility checks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePremium Materials:\u003c\/b\u003e Aluminum forged piston with robust skirt design for high‑heat, high‑RPM endurance typical of ATV use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePrecision Engineering:\u003c\/b\u003e 77.50 mm bore and 64.00 mm stroke engineered to restore correct compression and to maintain proper piston ring seating.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePerformance Restoration:\u003c\/b\u003e 290cc displacement recovers lost midrange and top‑end power, improving throttle response on trails and fields.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eValue‑Oriented Upgrade:\u003c\/b\u003e A cost‑effective route to top‑end reliability without a full engine rebuild.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNotes: All performance claims are based on the oversize 1.50 mm kit specifications for the Kawasaki 300 family and typical top‑end rebuild expectations for 290cc engines.\u003c\/p\u003e\n\u003ch3\u003eInstallation Notes:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eInspect the cylinder bore for wear or glazing; a worn bore can negate the benefits of an oversize piston if not addressed.\u003c\/li\u003e\n\u003cli\u003eOrient and install piston rings with correct top\/second ring orientation (check markings if provided); ensure end gaps are within spec for the bore size.\u003c\/li\u003e\n\u003cli\u003eApply a light coat of assembly lubricant to the piston skirts and rings before installation to prevent dry startup.\u003c\/li\u003e\n\u003cli\u003eInstall the wrist pin and circlips securely; verify the circlip seats fully in the groove to prevent loss during operation.\u003c\/li\u003e\n\u003cli\u003eVerify piston orientation relative to the connecting rod so the crown faces the combustion chamber; incorrect orientation can cause early wear or failure.\u003c\/li\u003e\n\u003cli\u003eDuring break‑in, run at light throttle for the first 20–30 minutes to seat rings, then gradually introduce higher loads; monitor for unusual noises or loss of compression.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNotes: Some tips reference standard piston kit practices; refer to your service manual for Kawasaki 300 series specifics and torque\/clearance guidelines where applicable.\u003c\/p\u003e\n\u003ch3\u003eWhy Upgrade?\u003c\/h3\u003e\n\u003cp\u003eRunning a worn piston in a 290cc ATV engine can lead to degraded compression, reduced throttle response, and diminished high‑end power, especially under load on trails or farm work. This OS 1.50 piston kit restores compression and displacement, delivering dependable power and longer‑term reliability by rejuvenating the top end and improving sealing for sustained performance.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"ATV City","offers":[{"title":"Default Title","offer_id":57319260455286,"sku":"190.20000-6","price":114.37,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0971\/0302\/0406\/files\/image_2026-02-25_222348817.png?v=1774886192","url":"https:\/\/dgtagri.co.uk\/products\/piston-kit-kawasaki-klf-kef-kvf-300-os-1-50","provider":"DGT Agri","version":"1.0","type":"link"}