{"product_id":"top-gasket-kit-honda-trx-300-1988-2000","title":"Top End Gasket Kit – Honda TRX300 FourTrax (1988–2000)","description":"\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan\u003eEngineered to meet or exceed original sealing standards, this Top End Gasket Kit provides reliable compression and oil sealing during TRX300 engine rebuilds. Designed as an aftermarket replacement, it delivers precise fitment for top-end work and supports dependable operation across the 1988–2000 Honda TRX300 range. This kit focuses on the essential top-end gaskets needed for a successful cylinder head rebuild, helping restore engine integrity and performance.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eComprehensive Vehicle Fitment\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv class=\"ds-scroll-area _1210dd7 c03cafe9\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cspan\u003eManufacturer\u003c\/span\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cspan\u003eModels \/ Series\u003c\/span\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cspan\u003eYears \/ Details\u003c\/span\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eHonda\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eTRX300 FourTrax 2WD\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1988–2000\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eHonda\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eTRX300FW FourTrax 4x4\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1988–2000\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e \u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eProduct Specifications\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv class=\"ds-scroll-area _1210dd7 c03cafe9\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cspan\u003eSpecification\u003c\/span\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cspan\u003eDetails\u003c\/span\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eOEM Reference Part Numbers\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003e\u003cspan\u003e12251-HA0-004\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e12191-HC4-900\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e12191-HC4-900\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e18291-MN4-920\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e14525-HA7-690\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e12194-HC5-740\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eType\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eTop End Gasket Kit (Top End Gaskets Only)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eManufacturer\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eAftermarket Replacement\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eMaterial\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eHigh-quality gasket materials designed for durable sealing under typical engine temperatures\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eCondition\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e100% New Aftermarket\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eApplication\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eCylinder head\/top-end gasket kit for Honda TRX300 FourTrax (1988–2000)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e \u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eOEM Cross-Reference Information\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv class=\"ds-scroll-area _1210dd7 c03cafe9\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cspan\u003eOriginal Part Number\u003c\/span\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cspan\u003eComponent\u003c\/span\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cspan\u003eCross-Reference Notes\u003c\/span\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003e12251-HA0-004\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eCylinder Head Gasket\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan\u003eGenuine Honda part for 1988-2000 TRX300\/FW; supersedes 12251-HA0-003 \u003c\/span\u003e\u003ca href=\"https:\/\/www.motosport.com\/utility\/oem-parts\/HONDA\/1990\/trx300fw-4x4\/gasket-kit-a\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003e12191-HC4-900\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eCylinder Base Gasket\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan\u003eGenuine Honda part; supersedes 12191-HA0-000 (GASKET, CYLINDER) \u003c\/span\u003e\u003ca href=\"https:\/\/www.motosport.com\/utility\/oem-parts\/HONDA\/1990\/trx300fw-4x4\/gasket-kit-a\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/www.motosport.com\/utility\/oem-parts\/honda\/1989\/trx300-fourtrax-2x4\/cylinder\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003e18291-MN4-920\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eExhaust Pipe Gasket\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan\u003eGenuine Honda part for exhaust port seal; supersedes 18291-MT3-000 \u003c\/span\u003e\u003ca href=\"https:\/\/www.motosport.com\/utility\/oem-parts\/HONDA\/1990\/trx300fw-4x4\/gasket-kit-a\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003e14525-HA7-690\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eTensioner Gasket\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan\u003eGenuine Honda part; supersedes 14525-HA7-670 (GASKET, TENSIONER) \u003c\/span\u003e\u003ca href=\"https:\/\/www.motosport.com\/utility\/oem-parts\/HONDA\/1990\/trx300fw-4x4\/gasket-kit-a\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003e12194-HC5-740\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eTensioner Hole Gasket\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan\u003eGenuine Honda part; supersedes 12194-HA0-000\/306 (GASKET, TENSIONER HOLE) \u003c\/span\u003e\u003ca href=\"https:\/\/www.motosport.com\/utility\/oem-parts\/HONDA\/1990\/trx300fw-4x4\/gasket-kit-a\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e*\u003cspan\u003eOEM cross-reference numbers are provided for reference purposes only. These part numbers are confirmed for 1988-2000 TRX300 FourTrax models through official Honda parts diagrams \u003c\/span\u003e\u003ca href=\"https:\/\/www.motosport.com\/utility\/oem-parts\/HONDA\/1990\/trx300fw-4x4\/gasket-kit-a\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/www.motosport.com\/utility\/oem-parts\/honda\/1989\/trx300-fourtrax-2x4\/cylinder\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003cspan\u003e. Always verify fitment using your machine's exact model, year, and original part number before ordering.\u003c\/span\u003e*\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eWhat's Included\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan\u003eBased on standard top-end gasket kits for the TRX300 engine, this kit typically includes:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan\u003eCylinder head gasket (replaces OEM \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e12251-HA0-004\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e) \u003c\/span\u003e\u003ca href=\"https:\/\/www.motosport.com\/utility\/oem-parts\/HONDA\/1990\/trx300fw-4x4\/gasket-kit-a\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan\u003eCylinder base gasket (replaces OEM \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e12191-HC4-900\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e) \u003c\/span\u003e\u003ca href=\"https:\/\/www.motosport.com\/utility\/oem-parts\/HONDA\/1990\/trx300fw-4x4\/gasket-kit-a\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/www.motosport.com\/utility\/oem-parts\/honda\/1989\/trx300-fourtrax-2x4\/cylinder\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan\u003eExhaust pipe gasket (replaces OEM \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e18291-MN4-920\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e) \u003c\/span\u003e\u003ca href=\"https:\/\/www.motosport.com\/utility\/oem-parts\/HONDA\/1990\/trx300fw-4x4\/gasket-kit-a\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan\u003eTensioner gasket (replaces OEM \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e14525-HA7-690\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e) \u003c\/span\u003e\u003ca href=\"https:\/\/www.motosport.com\/utility\/oem-parts\/HONDA\/1990\/trx300fw-4x4\/gasket-kit-a\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan\u003eTensioner hole gaskets (replaces OEM \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e12194-HC5-740\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e) \u003c\/span\u003e\u003ca href=\"https:\/\/www.motosport.com\/utility\/oem-parts\/HONDA\/1990\/trx300fw-4x4\/gasket-kit-a\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan\u003eRelated O-rings and seals as required for complete top-end sealing\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cem\u003e\u003cspan\u003eNote: This is a top-end gasket kit focusing on cylinder head and associated gaskets. For complete engine rebuilding, full gasket kits including oil seals and additional components are available from aftermarket suppliers \u003c\/span\u003e\u003ca href=\"https:\/\/fidanza.com\/athena-88-00-honda-trx-300-fw-fourtrax-complete-gasket-kit-excl-oil-seals-p400210850300\/\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/madnessautoworks.com\/index.php?route=product\/product\u0026amp;manufacturer_id=999728\u0026amp;product_id=300381456\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/www.powersportsid.com\/outlaw-racing\/engine-gasket-kit-mpn-or3568.html\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eWhy Choose This Aftermarket Top End Gasket Kit?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eDirect-Fit Compatibility:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Precision-engineered for Honda TRX300 FourTrax 2WD and TRX300FW FourTrax 4x4 models spanning 1988 through 2000 \u003c\/span\u003e\u003ca href=\"https:\/\/fidanza.com\/athena-88-00-honda-trx-300-fw-fourtrax-complete-gasket-kit-excl-oil-seals-p400210850300\/\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/www.vividracing.com\/athena-top-end-gasket-kit-honda-atc-cmx-trx-19852018-p-153821311.html\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/www.denniskirk.com\/wiseco\/pk-piston-kit-75-5mm-bore-pk1045.ppk1045.prd\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eOEM Cross-Reference:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Cross-references genuine Honda part numbers \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e12251-HA0-004\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e (cylinder head gasket) and \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e12191-HC4-900\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e (cylinder base gasket) for confident replacement \u003c\/span\u003e\u003ca href=\"https:\/\/www.motosport.com\/utility\/oem-parts\/HONDA\/1990\/trx300fw-4x4\/gasket-kit-a\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/www.motosport.com\/utility\/oem-parts\/honda\/1989\/trx300-fourtrax-2x4\/cylinder\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eProven Aftermarket Support:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Multiple respected aftermarket brands manufacture compatible gasket kits for the TRX300:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eAthena\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e offers complete gasket kits (P400210850300) entirely engineered in Italy, using latest generation laser cutting technology and surface treatments to compensate irregularities \u003c\/span\u003e\u003ca href=\"https:\/\/fidanza.com\/athena-88-00-honda-trx-300-fw-fourtrax-complete-gasket-kit-excl-oil-seals-p400210850300\/\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/www.vividracing.com\/athena-top-end-gasket-kit-honda-atc-cmx-trx-19852018-p-153821311.html\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eVertex\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e provides complete overhaul gasket kits (811900) containing all OEM-specified gaskets, o-rings, and engine oil seals, plus formed rubber valve cover gaskets with high-performance MicroPore interface material \u003c\/span\u003e\u003ca href=\"https:\/\/madnessautoworks.com\/index.php?route=product\/product\u0026amp;manufacturer_id=999728\u0026amp;product_id=300381456\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eOutlaw Racing\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e supplies engine gasket kits (OR3568) constructed from materials such as Stainless Steel, Fluoroviton and Teflon, made to exact OEM specs but with better materials for longer life \u003c\/span\u003e\u003ca href=\"https:\/\/www.powersportsid.com\/outlaw-racing\/engine-gasket-kit-mpn-or3568.html\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eWSM\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e and \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eWiseco\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e offer complete top-end rebuild kits including pistons, rings, and all necessary gaskets \u003c\/span\u003e\u003ca href=\"https:\/\/www.denniskirk.com\/wiseco\/pk-piston-kit-75-5mm-bore-pk1045.ppk1045.prd\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/www.denniskirk.com\/wsm\/top-end-rebuild-kit-74-75mm-bore-54-223-13.p14009343.prd\/14009343.sku?site_preference=mobile\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003ePremium Materials:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Outlaw Racing gaskets are manufactured using advanced materials including Stainless Steel, Fluoroviton and Teflon to exceed OEM specifications \u003c\/span\u003e\u003ca href=\"https:\/\/www.powersportsid.com\/outlaw-racing\/engine-gasket-kit-mpn-or3568.html\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003cspan\u003e. Vertex kits utilise MicroPore interface material for consistent sealing under heat and pressure \u003c\/span\u003e\u003ca href=\"https:\/\/madnessautoworks.com\/index.php?route=product\/product\u0026amp;manufacturer_id=999728\u0026amp;product_id=300381456\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eRestores Compression:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e New head and base gaskets ensure proper cylinder sealing for optimal engine performance.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003ePrevents Leaks:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Complete sealing kit prevents oil seepage and maintains clean engine operation.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eInstallation Notes:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan\u003eEnsure all mating surfaces are clean and free from old gasket material before installation.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan\u003eFollow manufacturer torque specifications and tightening sequences for cylinder head bolts.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan\u003eUse new gaskets only—do not reuse old gaskets once removed.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan\u003eCheck valve clearance after head installation and adjust if necessary.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan\u003eAfter installation, run the engine and check for any signs of leaks.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan\u003eNote that complete gasket kits may include oil seals; verify kit contents before ordering \u003c\/span\u003e\u003ca href=\"https:\/\/madnessautoworks.com\/index.php?route=product\/product\u0026amp;manufacturer_id=999728\u0026amp;product_id=300381456\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eWhy Upgrade?\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eWorn or damaged gaskets can cause compression loss, oil leaks, and contamination—leading to poor performance and potential engine damage. Restore your Honda TRX300 FourTrax engine's sealing integrity with this quality aftermarket top end gasket set, designed to keep you riding with confidence.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eOrder your top end gasket kit today and get back on the trail with confidence.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e","brand":"ATV City","offers":[{"title":"Default Title","offer_id":57319254032758,"sku":"180.19HA1253","price":23.96,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0971\/0302\/0406\/files\/image_2026-02-24_005225290.png?v=1774886126","url":"https:\/\/dgtagri.co.uk\/products\/top-gasket-kit-honda-trx-300-1988-2000","provider":"DGT Agri","version":"1.0","type":"link"}