{"product_id":"piston-kit-honda-trx-350-os-0-75-2000-2006","title":"OS 0.75 Piston Kit For Honda TRX 350 2000-2006 OEM Replacement 13104-HN5-670 Fits TRX 350","description":"\u003cdiv\u003eThis OS 0.75 oversize piston kit is designed specifically for the Honda TRX 350 Rancher models produced from 2000 through 2006. It increases the engine’s displacement by 0.75 mm, delivering a tangible boost in torque and smoother power delivery across the entire RPM range. Engineered to meet or exceed OEM tolerances, this kit helps restore compression and reliable performance when paired with proper bore measurements and compatible components. Rely on this OS oversize piston kit to address common wear in high-mileage Rancher engines: worn piston skirts, ring seating loss, and compression decline that robs throttle response and lugging torque. The 0.75 mm oversize option, when used with correct bore measurement and matching components, provides a durable upgrade for trail riding and farm work where consistent power matters.\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\u003eHonda\u003c\/td\u003e\n\u003ctd\u003eTRX350 Rancher FE (Rancher ES 4x4)\u003c\/td\u003e\n\u003ctd\u003e2000–2006\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHonda\u003c\/td\u003e\n\u003ctd\u003eTRX350 Rancher FM (Rancher 4x4)\u003c\/td\u003e\n\u003ctd\u003e2000–2006\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHonda\u003c\/td\u003e\n\u003ctd\u003eTRX350 Rancher TE (Rancher 2x4 ES)\u003c\/td\u003e\n\u003ctd\u003e2000–2006\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHonda\u003c\/td\u003e\n\u003ctd\u003eTRX350 Rancher TM (Rancher 2x4 S)\u003c\/td\u003e\n\u003ctd\u003e2000–2006\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\u003e13104-HN5-670\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003ePiston Kit OS 0.75 (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\u003eHonda TRX 350 Rancher (2000–2006)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBore Size\u003c\/td\u003e\n\u003ctd\u003e79.5 mm (OS 0.75 oversize; typical for 0.75 applications)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePiston Material\u003c\/td\u003e\n\u003ctd\u003eAluminum Alloy (AC8A)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePiston Style\u003c\/td\u003e\n\u003ctd\u003eBig Bore\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePiston Type\u003c\/td\u003e\n\u003ctd\u003eConcave\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded Components\u003c\/td\u003e\n\u003ctd\u003ePiston, Rings, Wrist Pin, Circlips\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNotes\u003c\/td\u003e\n\u003ctd\u003eOS oversize requires proper bore measurement and clearance to ensure optimal performance\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: 22.1693%;\"\u003ePart Number\u003c\/th\u003e\n\u003cth style=\"width: 22.0545%;\"\u003eBrand \/ Type\u003c\/th\u003e\n\u003cth style=\"width: 55.0542%;\"\u003eCross-Reference Notes\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 22.1693%;\"\u003e13104-HN5-670\u003c\/td\u003e\n\u003ctd style=\"width: 22.0545%;\"\u003eHonda OEM\u003c\/td\u003e\n\u003ctd style=\"width: 55.0542%;\"\u003eDirect cross-reference for TRX350 Rancher 2000–2006\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 22.1693%;\"\u003e13105-HN5-670\u003c\/td\u003e\n\u003ctd style=\"width: 22.0545%;\"\u003eHonda OEM\u003c\/td\u003e\n\u003ctd style=\"width: 55.0542%;\"\u003eCross-reference for 0.75 OS big bore kits\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 22.1693%;\"\u003e13101-HN5-670\u003c\/td\u003e\n\u003ctd style=\"width: 22.0545%;\"\u003eHonda OEM\u003c\/td\u003e\n\u003ctd style=\"width: 55.0542%;\"\u003eCross-reference supported in multiple listing sources\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\u003eComes as a complete top-end kit designed for an easy install on the affected TRX350 engines.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003ePiston\u003c\/b\u003e – OS oversize 0.75\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eRings\u003c\/b\u003e – piston ring set\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\u003eNote: Gaskets, seals, and related base or head components are not included and may need to be sourced separately depending on your engine condition.\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 align with OEM tolerances for a straightforward installation on 2000–2006 TRX350 Rancher models.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eOEM Cross-Reference:\u003c\/b\u003e Includes established cross-references to popular Honda part numbers for easy compatibility checks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePremium Materials:\u003c\/b\u003e Aluminum alloy piston designed for durable heat resistance and reliable high-RPM performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePrecisely Ground Bore:\u003c\/b\u003e Oversize 0.75 design paired with proper bore measurement ensures optimal ring seal and compression.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePerformance Restoration:\u003c\/b\u003e Restores original power and throttle response lost to wear, especially in demanding trail or farm use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eLong-Term Reliability:\u003c\/b\u003e Built to endure repetitive high-load scenarios and extended service intervals with proper break-in and maintenance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation Notes:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMeasure the cylinder bore precisely to confirm compatibility with an OS 0.75 oversized piston.\u003c\/li\u003e\n\u003cli\u003eInspect and clean the cylinder for scoring or damage before installation; de-glaze if necessary.\u003c\/li\u003e\n\u003cli\u003eInstall piston rings with correct orientation and staggered end gaps per service manual guidelines.\u003c\/li\u003e\n\u003cli\u003eLubricate the piston and rings with clean engine oil before assembly to reduce initial wear on startup.\u003c\/li\u003e\n\u003cli\u003eSecure the wrist pin with both circlips; ensure circlip grooves are clean and the clips are fully seated.\u003c\/li\u003e\n\u003cli\u003eCheck piston alignment (arrow\/mark) relative to the intake\/exhaust orientation to avoid timing or seating issues.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy Upgrade?\u003c\/h3\u003e\nRunning a worn top end on a TRX 350 Rancher compromises compression, throttle response, and overall reliability. This aftermarket OS 0.75 piston kit restores compression and reclaims lost power, delivering dependable performance for trail adventures or agricultural work.\u003c\/div\u003e","brand":"ATV City","offers":[{"title":"Default Title","offer_id":57319259079030,"sku":"190.10007-3","price":106.66,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0971\/0302\/0406\/files\/image_2026-02-25_232129261.png?v=1774886126","url":"https:\/\/dgtagri.co.uk\/products\/piston-kit-honda-trx-350-os-0-75-2000-2006","provider":"DGT Agri","version":"1.0","type":"link"}