{"product_id":"pro-circuit-4qh90090-t-4-exhaust-system-honda-trx90-moto-house-mx","title":"Pro Circuit T-4 Exhaust System 4QH90090 - Honda TRX90 \/ TRX90EX \/ TRX90X 1993-2009","description":"\u003ch1\u003e\u003cstrong\u003ePro Circuit T-4 Exhaust System 4QH90090 - Honda TRX90 \/ TRX90EX \/ TRX90X 1993-2009\u003c\/strong\u003e\u003c\/h1\u003e\n\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe Pro Circuit 4QH90090 T-4 Exhaust System is engineered to unlock maximum engine output and enhance overall performance for your Honda TRX90 youth quad. Designed as a complete replacement for the restrictive stock pipe, this full exhaust system delivers improved power delivery throughout the rev range alongside a deep, crisp exhaust note that brings your machine to life.\u003c\/p\u003e\n\u003cp\u003eBuilt for durability and lightweight performance, the T-4 system features a \u003cstrong\u003ebrushed 6061-T6 aluminum\u003c\/strong\u003e canister paired with a stainless steel header pipe and conical end cap. The design includes tunable end caps to help fine-tune power delivery for various terrain and riding conditions, while steel allen-head screws allow for easy repacking using the included extra E-glass pillow packing.\u003c\/p\u003e\n\u003ch3\u003eTop Features: Pro Circuit T-4 Exhaust System\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFull exhaust system designed to increase power delivery and produce an improved exhaust note.\u003c\/li\u003e\n\u003cli\u003eLightweight 6061-T6 brushed aluminum muffler body with stainless steel intake tube and end cap.\u003c\/li\u003e\n\u003cli\u003eTunable end-cap design allowing customization of power delivery for specific riding conditions and terrain.\u003c\/li\u003e\n\u003cli\u003eSteel allen-head fastener assembly engineered to make routine muffler repacking quick and simple.\u003c\/li\u003e\n\u003cli\u003eIncludes exclusive high-density E-glass pillow packing plus extra packing material in the box.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePlease review the detailed compatibility data below to ensure an exact fitment match for your motorcycle before finalizing your purchase.\u003c\/p\u003e\n\u003ch3\u003eFitment List\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"5\" style=\"border-collapse: collapse; width: 100%;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background-color: #f2f2f2;\"\u003e\n\u003cth\u003eYear Range\u003c\/th\u003e\n\u003cth\u003eVehicle Brand\u003c\/th\u003e\n\u003cth\u003eVehicle Model \u0026amp; Sub-Model\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e1993-1999\u003c\/td\u003e\n\u003ctd\u003eHonda\u003c\/td\u003e\n\u003ctd\u003eTRX90 FourTrax\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2000\u003c\/td\u003e\n\u003ctd\u003eHonda\u003c\/td\u003e\n\u003ctd\u003eTRX90 Sportrax\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2001\u003c\/td\u003e\n\u003ctd\u003eHonda\u003c\/td\u003e\n\u003ctd\u003eTRX90 FourTrax\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2002-2006\u003c\/td\u003e\n\u003ctd\u003eHonda\u003c\/td\u003e\n\u003ctd\u003eTRX90 Sportrax\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2007-2008\u003c\/td\u003e\n\u003ctd\u003eHonda\u003c\/td\u003e\n\u003ctd\u003eTRX90EX Sportrax\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2009\u003c\/td\u003e\n\u003ctd\u003eHonda\u003c\/td\u003e\n\u003ctd\u003eTRX90X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cb\u003eQ: Does this Pro Circuit T-4 exhaust come with muffler packing included?\u003c\/b\u003e\u003cbr\u003eA: Yes, the exhaust system comes pre-packed with exclusive E-glass pillow packing and includes extra packing in the box for future maintenance.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eQ: What materials are used in the construction of the T-4 system?\u003c\/b\u003e\u003cbr\u003eA: The canister is constructed from brushed 6061-T6 aluminum, while the head pipe, intake tube, and conical end cap are built from stainless steel.\u003c\/p\u003e\n\u003ch3\u003eExpert Pro-Tip:\u003c\/h3\u003e\n\u003cp\u003e\u003cb\u003eExpert Pro-Tip:\u003c\/b\u003e Whenever installing a full exhaust system on a carbureted quad like the TRX90, always check your air-fuel mixture and carb jetting. Increasing exhaust flow reduces backpressure, so stepping up the main jet size slightly will ensure optimal throttle response, prevent lean running conditions, and protect engine valves from excess heat.\u003c\/p\u003e\n\u003ch3\u003eRecommended Pairings:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/motohousemx.com\/collections\/2-stroke-performance-quads-atv\"\u003eAll Quads \u0026amp; ATV Performance Parts\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/motohousemx.com\/collections\/honda-motorcycle-performance-parts\"\u003eHonda Performance Parts\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/motohousemx.com\/collections\/mx-off-road-motorcycle-tools\"\u003eOff-Road Maintenance Tools\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAt Moto-House MX, we carry the best brands in motocross and off-road performance. Our team has over 40 years of experience helping riders get more out of their bikes. We pride ourselves on great customer service, and every item ships FAST - straight to your door.\u003c\/p\u003e\n\u003cp\u003e\u003ci\u003e\u003cstrong\u003eMoto-House MX - Choice of Champions\u003c\/strong\u003e - Your premier powersports source with great customer service and lightning-fast shipping straight to your door.\u003c\/i\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"PRO CIRCUIT","offers":[{"title":"Default Title","offer_id":42974625628243,"sku":"4QH90090","price":370.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1754\/5421\/files\/pro-circuit-4qh90090-t-4-exhaust-system-honda-trx90-trx90ex-trx90x-sportrax-9919754.png?v=1755960407","url":"https:\/\/motohousemx.com\/products\/pro-circuit-4qh90090-t-4-exhaust-system-honda-trx90-moto-house-mx","provider":"Moto-House MX","version":"1.0","type":"link"}