{"product_id":"piston-ring-kit-honda-trx-450-std-1998-2004","title":"Piston Ring Kit STD Bore For Honda TRX 450 Foreman 1998 To 2004 FM FE S ES ATV Aftermarket Replacement","description":"\u003cdiv\u003e\n\u003cp\u003eRestore engine compression and crisp throttle response with this STD bore Piston Ring Kit designed for the TRX 450 Foreman 1998-2004 4x4 ATVs. The kit targets FM\/FE\/ES\/S models within that window, providing a straightforward top-end rebuild path to bring power and reliability back to the trail or farm. With a true standard bore, it offers a simple, direct replacement that seals cleanly against the cylinder for dependable combustion.\u003c\/p\u003e\n\u003cp\u003eThis aftermarket replacement focuses on restoring proper ring seal under demanding conditions, addressing common wear symptoms like reduced compression, oil consumption, and sluggish response. Built to endure rugged use and heat cycling, it delivers a cost-effective alternative to OEM parts without sacrificing performance or durability on tough terrain.\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\u003eHonda\u003c\/td\u003e\n\u003ctd\u003eTRX450 Foreman S (TRX450S)\u003c\/td\u003e\n\u003ctd\u003e1998-2004\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHonda\u003c\/td\u003e\n\u003ctd\u003eTRX450 Foreman ES (TRX450ES)\u003c\/td\u003e\n\u003ctd\u003e1998-2004\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHonda\u003c\/td\u003e\n\u003ctd\u003eTRX450 Foreman FE (TRX450FE)\u003c\/td\u003e\n\u003ctd\u003e1998-2004\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHonda\u003c\/td\u003e\n\u003ctd\u003eTRX450 Foreman FM (TRX450FM)\u003c\/td\u003e\n\u003ctd\u003e1998-2004\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHonda\u003c\/td\u003e\n\u003ctd\u003eTRX450 Foreman 4x4 (S\/ES\/FE\/FM 4x4)\u003c\/td\u003e\n\u003ctd\u003e1998-2004\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\u003e13010-HN0-A01, 13010-HN0-A02\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003ePiston Ring Kit (Standard Bore)\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 450 Foreman (1998-2004) FM\/FE\/ES\/S 4x4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBore Size\u003c\/td\u003e\n\u003ctd\u003e90.0 mm (Standard Bore)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRing Count \/ Configuration\u003c\/td\u003e\n\u003ctd\u003e3 rings total — 2 compression rings + 1 oil ring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eRings: Cast iron; top compression ring chrome-faced; other rings matched to OEM specs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnd Gap Type\u003c\/td\u003e\n\u003ctd\u003eStandard bore end gaps (as per OEM spec for 90 mm cylinder)\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: 15.3275%;\"\u003ePart Number\u003c\/th\u003e\n\u003cth style=\"width: 14.8169%;\"\u003eBrand \/ Type\u003c\/th\u003e\n\u003cth style=\"width: 69.1336%;\"\u003eCross-Reference Notes\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 15.3275%;\"\u003e13010-HN0-A01\u003c\/td\u003e\n\u003ctd style=\"width: 14.8169%;\"\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 69.1336%;\"\u003eOEM standard bore piston ring kit for TRX450 Foreman 1998-2004; cross-referenced to Aftermarket Replacement kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 15.3275%;\"\u003e13010-HN0-A02\u003c\/td\u003e\n\u003ctd style=\"width: 14.8169%;\"\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 69.1336%;\"\u003eAlternate OEM reference for same standard bore TRX450 Foreman applications; cross-referenced to Aftermarket Replacement kit\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 piston rings designed for a standard 90 mm bore TRX450 engine.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cb\u003eTop Compression Ring\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003eSecond Compression Ring\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003eOil Ring\u003c\/b\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eNote: The kit does not include the piston, wrist pin, circlips, or gaskets.\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 Precisely matched to TRX450 Foreman models from 1998-2004 (FM\/FE\/ES\/S) with standard bore.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eOEM Cross-Reference:\u003c\/b\u003e Backed by Honda OEM references 13010-HN0-A01 \/ 13010-HN0-A02, with a trusted aftermarket alternative.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePremium Materials:\u003c\/b\u003e Chrome-faced top ring and durable cast-iron rings designed to resist wear and maintain seal integrity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePerformance Restoration:\u003c\/b\u003e Restores compression, throttle response, and combustion efficiency for rugged terrain.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eCost-Effective:\u003c\/b\u003e A budget-friendly option that preserves reliability without the OEM price tag.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eReliability in Harsh Conditions:\u003c\/b\u003e Built to handle trail and farm duties where heat, dust, and heavy loads are common.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation Notes:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eVerify Bore Size:\u003c\/b\u003e Confirm a 90.0 mm standard bore before installation; if the cylinder has been bored oversize, you’ll need an oversize kit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eEnd-Gap Verification:\u003c\/b\u003e Check ring end gaps against OEM specifications for a 90 mm cylinder using a feeler gauge.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eCylinder Prep:\u003c\/b\u003e Thoroughly clean the cylinder bore and remove any nicks or burrs; hone as required per OEM guidelines.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eLubrication:\u003c\/b\u003e Lubricate rings and cylinder walls with clean engine oil prior to installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eOrdering Clarification:\u003c\/b\u003e This kit includes only rings; pistons, wrist pins, circlips, and gaskets are not included—plan install accordingly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eRing Handling:\u003c\/b\u003e Use a proper ring expander to avoid damaging or warping rings during placement; install in the correct order (top ring, second ring, oil ring).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy Upgrade?\u003c\/h3\u003e\n\u003cp\u003eRunning worn rings in this 90 mm bore can lead to a dramatic drop in compression, increased oil consumption, and sluggish response in demanding terrain. Replacing with this STD bore kit restores sealing efficiency and enables reliable, consistent combustion, helping you ride with confidence on trails or across the farm.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"ATV City","offers":[{"title":"Default Title","offer_id":57319262257526,"sku":"192.04541","price":21.66,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0971\/0302\/0406\/files\/pistonring_31201b8d-a9f0-49b6-95b4-9f6e0beac0c1.png?v=1774886131","url":"https:\/\/dgtagri.co.uk\/products\/piston-ring-kit-honda-trx-450-std-1998-2004","provider":"DGT Agri","version":"1.0","type":"link"}