{"product_id":"builder-series-shorty-slip-on-exhaust-thruxton-900","title":"Builder Series TT Slip-On Exhaust for Triumph Thruxton 900 (2004–2016)","description":"\u003ch2\u003e\u003cstrong\u003eTriumph Thruxton 900 Slip-On Exhaust\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eSince 1907, the Isle of Man TT has been the defining test of what a café racer can do. The bikes that ran there were not built for comfort. They were stripped, tuned, and sent down 37 miles of public roads with stone walls at arm's length and no margin for mechanical compromise. Speed was the point. Character was the result.\u003c\/p\u003e\n\u003cp\u003eThat is what we named this exhaust after.\u003c\/p\u003e\n\u003cp\u003eThe Thruxton 900 is one of the most honest café racers in Triumph's modern lineup. But the stock exhaust was engineered for noise compliance, not for what a café racer is supposed to sound like. It mutes the deep, raw tone the 900cc twin is capable of producing. Not a design flaw. A design choice. The Builder Series TT makes a different one.\u003c\/p\u003e\n\u003cp\u003eThe Two-Stage Core uses two baffles at two different diameters to control exhaust flow in sequence, maintaining the mid-range torque the Thruxton depends on through corners, city traffic, and rolling throttle. The Dimpled Baffle shapes a deep, classic British twin exhaust note the stock mufflers were never designed to produce. At 2.4 pounds per silencer, it also drops significant weight from a bike that was built to be light in the first place.\u003c\/p\u003e\n\u003cp\u003eThis is the exhaust the Thruxton 900 should have shipped with.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features \u0026amp; Benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimpled Baffle\u003c\/strong\u003e — Shapes a deep, classic British twin exhaust note. Eliminates the thin, hollow sound that perforated cores produce. The Builder Series TT is a loud exhaust by design and is not compatible with dB Killers. For a quieter option that is still mid-range tuned, the Predator Pro 2.0 uses a Louvre Core and is dB Killer compatible.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo-Stage Core\u003c\/strong\u003e — Controls exhaust flow in two stages to maintain low-to-mid-range torque. Prevents the mid-range power loss common in perforated core aftermarket exhausts. The Thruxton 900 stays responsive through corners and rolling throttle. The Two-Stage Core is exclusive to the Builder Series TT and is the reason dB Killers are not compatible with this design.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSignificant Weight Savings\u003c\/strong\u003e — Each silencer weighs 2.4 pounds, replacing stock mufflers at 8 to 10 pounds per side. A bike built to be light gets lighter. Physics, not marketing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e20-Gauge 304 Stainless Steel\u003c\/strong\u003e — Corrosion-resistant and built for heat cycling. Brushed finish pairs naturally with the Thruxton's lines, develops character over time, and requires no polishing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExposed Weld, Vintage Custom Aesthetic\u003c\/strong\u003e — Welds left visible and unfinished for a raw, purposeful look. Matches the café racer identity of the Thruxton 900. Distinct from catalog-custom parts that try to hide their construction.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBolt-On to Stock Headers\u003c\/strong\u003e — Mounts directly to OEM headers and factory mounting points. No cutting, welding, or permanent modification. Requires a tune update to the 2-2 Arrow Map at your local Triumph dealer. Fully reversible.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eWhat's Included\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003ePair of Builder Series TT Mufflers\u003c\/li\u003e\n\u003cli\u003eStainless Steel Exhaust Clamp\u003c\/li\u003e\n\u003cli\u003eMounting Spacer\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eTechnical Specifications\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003eMaterial: 20-gauge 304 stainless steel\u003c\/li\u003e\n\u003cli\u003eFinish: Brushed stainless\u003c\/li\u003e\n\u003cli\u003eDesign: Exposed weld construction with Two-Stage Core and Dimpled Baffle\u003c\/li\u003e\n\u003cli\u003eWeight: 2.4 lbs per silencer (4.8 lbs per pair)\u003c\/li\u003e\n\u003cli\u003eLength: 14 inches\u003c\/li\u003e\n\u003cli\u003eDiameter: 3.75 inches\u003c\/li\u003e\n\u003cli\u003eHardware: Stainless steel exhaust clamp and mounting spacer included\u003c\/li\u003e\n\u003cli\u003eFitment: Triumph Thruxton 900 (2004–2016)\u003c\/li\u003e\n\u003cli\u003eFitment Note: Requires a tune update to the 2-2 Arrow Map at your local Triumph dealer.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eInstallation Guide\u003c\/h5\u003e\n\u003cp\u003eEstimated Install Time: 30 minutes plus dealer visit for tune update\u003c\/p\u003e\n\u003cp\u003eSkill Level: Beginner. Straightforward bolt-on swap using factory mounting points. Tune update requires a visit to your local Triumph dealer.\u003c\/p\u003e\n\u003cp\u003eTools Required: Socket set, Allen key set, torque wrench\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInstallation Steps:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRemove the stock mufflers from the OEM headers by loosening the exhaust clamps and mounting hardware.\u003c\/li\u003e\n\u003cli\u003eSlide the Builder Series TT silencers onto the stock header pipes.\u003c\/li\u003e\n\u003cli\u003eSecure each silencer with the included stainless steel exhaust clamp.\u003c\/li\u003e\n\u003cli\u003eInstall the mounting spacer and tighten all hardware to the manufacturer-recommended torque specification.\u003c\/li\u003e\n\u003cli\u003eVisit your local Triumph dealer to have the ECU updated to the 2-2 Arrow Map.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eInstallation Guide\u003c\/h5\u003e\n\u003cp\u003eEstimated Install Time: 30 minutes plus dealer visit for tune update\u003c\/p\u003e\n\u003cp\u003eSkill Level: Beginner. Straightforward bolt-on swap using factory mounting points. Tune update requires a visit to your local Triumph dealer.\u003c\/p\u003e\n\u003cp\u003eTools Required: Socket set, Allen key set, torque wrench\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInstallation Steps:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRemove the stock mufflers from the OEM headers by loosening the exhaust clamps and mounting hardware.\u003c\/li\u003e\n\u003cli\u003eSlide the Builder Series TT silencers onto the stock header pipes.\u003c\/li\u003e\n\u003cli\u003eSecure each silencer with the included stainless steel exhaust clamp.\u003c\/li\u003e\n\u003cli\u003eInstall the mounting spacer and tighten all hardware to the manufacturer-recommended torque specification.\u003c\/li\u003e\n\u003cli\u003eVisit your local Triumph dealer to have the ECU updated to the 2-2 Arrow Map.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003cb id=\"docs-internal-guid-4bbeb378-7fff-4e55-63b2-7a7d27579165\"\u003e\u003cspan\u003eHOW TO INSTALL BUILDER SERIES SHORTY EXHAUST\u003c\/span\u003e\u003c\/b\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cb\u003e\u003cspan\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/Cr4PUTlmVBw?si=ue_b1C1cTlDO5vX3\" title=\"YouTube video player\"\u003e\u003c\/iframe\u003e\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ch4\u003e\u003cb\u003e\u003cspan\u003eSOUND DEMO FOR BUILDER SERIES SHORTY FOR TRIUMPH SPEED TWIN 1200 \u0026amp; RS (2025+)\u003cbr\u003e\u003c\/span\u003e\u003c\/b\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cb\u003e\u003cspan\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/nL_TTcWj0Cw?si=nI8kRy_J4lBIghtw\" title=\"YouTube video player\"\u003e\u003c\/iframe\u003e\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInstallation Notes:\u003c\/strong\u003e The Builder Series TT mounts to factory headers and uses stock mounting points. No modification to the frame, headers, or catalytic converter is required. The install is fully reversible. The Thruxton 900 requires a tune update to the 2-2 Arrow Map, available at any authorized Triumph dealer.\u003c\/p\u003e\n\u003ch5\u003eWarranty\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003eDuration: 1 year limited warranty\u003c\/li\u003e\n\u003cli\u003eCoverage: Defects in materials and workmanship under normal use\u003c\/li\u003e\n\u003cli\u003eExclusions: Damage from improper installation, modification, or misuse\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eFrequently Asked Questions\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Will the Builder Series TT fit my Thruxton 900 without modification?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes. The Builder Series TT is fitment verified for the Triumph Thruxton 900 (2004–2016). It bolts directly onto the stock headers and uses factory mounting points. No cutting, welding, or modification is required.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Do I need an ECU remap after installing this exhaust?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes. The Thruxton 900 requires a tune update to the 2-2 Arrow Map, which is available at any authorized Triumph dealer. This ensures the fuel mapping is optimized for the Builder Series TT's exhaust flow characteristics.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How does the sound compare to stock?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The Dimpled Baffle delivers a deep, classic British twin exhaust note that brings out the engine's natural character. It is noticeably more present than stock but not excessive. It eliminates the flat, muted tone of the factory mufflers without being obnoxiously loud.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the weight savings over stock?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The Builder Series TT weighs 2.4 pounds per silencer (4.8 pounds per pair). Stock Thruxton 900 mufflers typically weigh 8 to 10 pounds per side. That is approximately 11 to 15 pounds of weight removed from the rear of the bike.\u003c\/p\u003e","brand":"British Customs","offers":[{"title":"Default Title","offer_id":42113446314080,"sku":"BC902.1.116-BS-BR","price":599.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2384\/1971\/files\/British_Customs_Builder_Series_TT_Slip-On_Exhaust_for_Triumph_Thruxton_900_2004_2016__02.webp?v=1772827659","url":"https:\/\/britishcustoms.com\/products\/builder-series-shorty-slip-on-exhaust-thruxton-900","provider":"British Customs","version":"1.0","type":"link"}