{"product_id":"piston-ring-kit-honda-trx-250-trx-250-ex-os-0-50-1997-2014","title":"Piston Ring Kit For Honda TRX 250 EX Recon 1997 2014 OS 0.50 High Quality Aftermarket Replacement","description":"\u003cdiv\u003e\n\u003cp\u003eThis piston ring kit is a high-quality aftermarket replacement designed for the 250-class four-stroke ATV family, covering EX and Recon variants across a broad range of years. It restores compression and reduces oil consumption by delivering a precise seal that stands up to heat and wear. The OS 0.50 specification offers a reliable balance of sealing performance and longevity, making it a practical upgrade when refreshing aging engines without paying OEM prices. Built for rugged trail work and farm use, this set helps bring your engine back to dependable, factory-like performance.\u003c\/p\u003e\n\u003cp\u003eThese rings address the most common wear issues on the 250 family—loss of compression, blue smoke, and increased oil burn—while delivering a durable, easy-to-install aftermarket solution for trail and farm duty. The OS 0.50 configuration provides proven sealing reliability, so you can trust this kit to restore power and reduce oil consumption without sacrificing longevity. It’s a direct-fit choice that keeps your machine running smoothly through long days in the dirt and mud.\u003c\/p\u003e\n\u003ch3\u003eComprehensive Vehicle Fitment\u003c\/h3\u003e\n\u003ctable style=\"width: 100%;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 17.509%;\"\u003eManufacturer\u003c\/th\u003e\n\u003cth style=\"width: 39.5307%;\"\u003eModels \/ Series\u003c\/th\u003e\n\u003cth style=\"width: 42.2383%;\"\u003eYears \/ Details\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 17.509%;\"\u003eHonda\u003c\/td\u003e\n\u003ctd style=\"width: 39.5307%;\"\u003eTRX 250 EX (Sport\/SporTrax variants)\u003c\/td\u003e\n\u003ctd style=\"width: 42.2383%;\"\u003e1997-2014\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 17.509%;\"\u003eHonda\u003c\/td\u003e\n\u003ctd style=\"width: 39.5307%;\"\u003eTRX Recon (and variants)\u003c\/td\u003e\n\u003ctd style=\"width: 42.2383%;\"\u003e1997-2022\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 17.509%;\"\u003eHonda\u003c\/td\u003e\n\u003ctd style=\"width: 39.5307%;\"\u003eTRX SPORTRAX EX\u003c\/td\u003e\n\u003ctd style=\"width: 42.2383%;\"\u003e2001-2008\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 17.509%;\"\u003eHonda\u003c\/td\u003e\n\u003ctd style=\"width: 39.5307%;\"\u003eTRX 250 X \/ SporTrax EX\u003c\/td\u003e\n\u003ctd style=\"width: 42.2383%;\"\u003e2001-2008 (SporTrax EX); 2003-2008 (X)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 17.509%;\"\u003eHonda\u003c\/td\u003e\n\u003ctd style=\"width: 39.5307%;\"\u003eTRX TE \/ TM Recon family\u003c\/td\u003e\n\u003ctd style=\"width: 42.2383%;\"\u003eEarly 2000s–mid-2010s\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\u003e13031-HM8-003\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003ePiston Ring Set (OS 0.50)\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\u003eTRX 250 EX (1997-2014); TRX Recon (1997-2022); compatible TRX 250 family variants\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eTop ring: chrome-faced steel; Second ring: molybdenum-faced steel; Oil ring: alloy\/steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnd Gap (OS)\u003c\/td\u003e\n\u003ctd\u003e0.50 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRings Included\u003c\/td\u003e\n\u003ctd\u003e3-piece set: Top compression ring, Second compression ring, Oil control ring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePiston Bore Size Compatibility\u003c\/td\u003e\n\u003ctd\u003eStandard TRX 250 bore class (~68.95 mm, as specified for this OS 0.50 set)\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: 20.762%;\"\u003ePart Number\u003c\/th\u003e\n\u003cth style=\"width: 24.0034%;\"\u003eBrand \/ Type\u003c\/th\u003e\n\u003cth style=\"width: 54.5126%;\"\u003eCross-Reference Notes\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 20.762%;\"\u003e13031-HM8-003\u003c\/td\u003e\n\u003ctd style=\"width: 24.0034%;\"\u003eAftermarket Replacement\u003c\/td\u003e\n\u003ctd style=\"width: 54.5126%;\"\u003eDirect-fit replacement; OS 0.50 ring set; aligns with Honda part family 13031-HM8-003\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 20.762%;\"\u003e13011-HM8-003\u003c\/td\u003e\n\u003ctd style=\"width: 24.0034%;\"\u003eHonda OEM\u003c\/td\u003e\n\u003ctd style=\"width: 54.5126%;\"\u003eStandard (STD) ring set for TRX 250 variants\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 20.762%;\"\u003e13021-HM8-003\u003c\/td\u003e\n\u003ctd style=\"width: 24.0034%;\"\u003eHonda OEM\u003c\/td\u003e\n\u003ctd style=\"width: 54.5126%;\"\u003eOS 0.25 ring set\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 20.762%;\"\u003e13041-HM8-003\u003c\/td\u003e\n\u003ctd style=\"width: 24.0034%;\"\u003eHonda OEM\u003c\/td\u003e\n\u003ctd style=\"width: 54.5126%;\"\u003eOS 0.75 ring set\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 20.762%;\"\u003e13051-HM8-003\u003c\/td\u003e\n\u003ctd style=\"width: 24.0034%;\"\u003eHonda OEM\u003c\/td\u003e\n\u003ctd style=\"width: 54.5126%;\"\u003eOS 1.00 ring set\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\u003eThis kit contains the essential piston ring components needed to restore compression on the TRX 250 engine family. In the box you’ll find: \u003cb\u003eTop compression ring\u003c\/b\u003e, \u003cb\u003eSecond compression ring\u003c\/b\u003e, \u003cb\u003eOil control ring\u003c\/b\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eNote: Piston, wrist pin, circlips, and related hardware are not included. Gaskets, seals, and the piston itself are sold separately as required for your rebuild.\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 TRX 250 EX (1997-2014) and Recon (1997-2022) platforms with minimal fuss.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eOEM Cross-Reference Alignment:\u003c\/b\u003e Matches Honda’s ring-set families (13031-HM8-003 and related OS variants) for reliable interchangeability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePremium Materials:\u003c\/b\u003e Chrome-faced top ring, molybdenum-faced second ring, and a robust oil ring deliver durable sealing under heat and wear.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eOS 0.50 Sealing Power:\u003c\/b\u003e Balanced longevity and compression restoration for everyday trail and farm use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePerformance Restoration:\u003c\/b\u003e Restores lost compression and reduces oil burn, helping to eliminate blue smoke and power fades.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eCost-Effective Upgrade:\u003c\/b\u003e Delivers OEM-like performance without the OEM price tag, ideal for budget-conscious rebuilds.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation Notes:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBegin with a thorough bore and ring-groove inspection; replace any worn or damaged grooves before installing the new rings.\u003c\/li\u003e\n\u003cli\u003eConfirm end gaps are at 0.50 mm (OS) and rotate gaps to distribute oil- and compression-sealing duties across the bore.\u003c\/li\u003e\n\u003cli\u003eLubricate all rings and the bore with assembly lube or clean engine oil before assembly.\u003c\/li\u003e\n\u003cli\u003eInstall rings in the correct order: top compression ring, second compression ring, then oil control ring; keep ring gaps offset from each other by at least 120 degrees.\u003c\/li\u003e\n\u003cli\u003eUse a proper piston-ring compression tool to avoid ring deformation during installation into the cylinder.\u003c\/li\u003e\n\u003cli\u003eCheck piston orientation and ensure the ring grooves and piston markings align with the cylinder’s orientation marks before final assembly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy Upgrade?\u003c\/h3\u003e\n\u003cp\u003eRunning a worn piston-ring set on a TRX 250 can lead to persistent compression loss, excessive oil consumption, blue smoke, and degraded idle and top-end power. Replacing with this OS 0.50 kit restores compression integrity and reduces oil burn, bringing the engine back toward factory-like performance and reliability for everyday trail work or farm tasks.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"ATV City","offers":[{"title":"Default Title","offer_id":57319262552438,"sku":"192.04563","price":18.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0971\/0302\/0406\/files\/pistonring_3b20ce0e-8e3d-43be-b5aa-11d52c90b846.png?v=1774886132","url":"https:\/\/dgtagri.co.uk\/products\/piston-ring-kit-honda-trx-250-trx-250-ex-os-0-50-1997-2014","provider":"DGT Agri","version":"1.0","type":"link"}