{"product_id":"builder-series-shorty-slip-on-exhaust-thruxton-speed-twin-1200","title":"Builder Series TT Slip-On Exhaust for Triumph Thruxton 1200R, RS \u0026 Speed Twin 1200 (2016-2024)","description":"\u003cp\u003e\u003cstrong\u003eTriumph Thruxton 1200, R, RS \u0026amp; Speed Twin 1200 Slip-On Exhaust\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSince 1907, the Isle of Man TT has been running on closed public roads on a small island in the Irish Sea. Thirty-seven miles. Stone walls, a mountain section, and no runoff. What came out of that race was not just lap records. It was a precise understanding of what performance actually requires: light weight, responsive power delivery through every RPM range, and the sound that tells you the engine is working.\u003c\/p\u003e\n\u003cp\u003eThat is what we named this exhaust after.\u003c\/p\u003e\n\u003cp\u003eThe Thruxton 1200R, Thruxton 1200 RS, and Speed Twin 1200 are among the most capable machines in Triumph's modern classic lineup. The stock exhaust does not reflect that. Factory mufflers are heavy, quiet, and built for compliance. They suppress the natural character of the 1200cc twin in exactly the RPM range where these bikes are most alive. The factory had its reasons. You have yours.\u003c\/p\u003e\n\u003cp\u003eThe Two-Stage Core uses two baffles at two different diameters to control exhaust flow in sequence, maintaining backpressure through the low-to-mid-range where the Thruxton and Speed Twin live: corners, rolling throttle, city traffic. The Dimpled Baffle shapes a deep, performance exhaust note that brings out the natural voice of the 1200cc engine. At 2.4 pounds per silencer, it replaces stock mufflers at 8 to 10 pounds per side and sharpens how all three bikes move.\u003c\/p\u003e\n\u003cp\u003eOne exhaust. Three fitments. No compromise.\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 — Produces a deep, performance exhaust note that brings out the natural voice of the 1200cc twin. 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 — Two-stage exhaust flow control preserves the low-to-mid-range torque that defines the 1200cc platform. Keeps the engine pulling strong through rolling throttle and corner exits, where perforated-core designs fall flat. 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. All three bikes sharpen immediately through corners and direction changes. Physics, not marketing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e20-Gauge 304 Stainless Steel\u003c\/strong\u003e — Corrosion-resistant and rated for sustained heat cycling. Brushed finish requires no polishing and develops character over time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGarage-Built Aesthetic\u003c\/strong\u003e — Exposed welds and brushed stainless finish give the TT a raw, custom look. This is not a catalog part. It looks like the rider built it in the garage. A deliberate contrast to highly polished aftermarket options.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect Swap on Stock Hardware\u003c\/strong\u003e — Fits the stock headers and factory mounting points on all three models. No cutting, welding, or frame modification. No ECU tuning needed with the factory catalytic converter. Install it in an afternoon and ride.\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 1200R (2016–2021), Thruxton 1200 RS (2020–2024), Speed Twin 1200 (2019–2024)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eInstallation Guide\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003eEstimated Install Time: 30 minutes\u003c\/li\u003e\n\u003cli\u003eSkill Level: Beginner. Straightforward bolt-on swap using factory mounting points.\u003c\/li\u003e\n\u003cli\u003eTools Required: Socket set, Allen key set, torque wrench\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eInstallation Steps:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRemove the stock mufflers by loosening the exhaust clamps and disconnecting the mounting hardware from the frame.\u003c\/li\u003e\n\u003cli\u003eSlide the Builder Series TT silencers onto the stock header outlet pipes.\u003c\/li\u003e\n\u003cli\u003eSecure each silencer using the included stainless steel exhaust clamp.\u003c\/li\u003e\n\u003cli\u003eInstall the mounting spacer and torque all fasteners to the manufacturer-recommended specification.\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 title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/Cr4PUTlmVBw?si=ue_b1C1cTlDO5vX3\" height=\"315\" width=\"560\"\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 title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/nL_TTcWj0Cw?si=nI8kRy_J4lBIghtw\" height=\"315\" width=\"560\"\u003e\u003c\/iframe\u003e\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInstallation Notes:\u003c\/strong\u003e Fits all three models using the same mounting interface. The install uses factory headers and stock mounting points with no modification. Fully reversible. No ECU tuning required when used with the factory catalytic converter in place.\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\u003cp\u003e \u003c\/p\u003e","brand":"British Customs","offers":[{"title":"Default Title","offer_id":42113447526496,"sku":"BC902.2.110-BS-BR","price":599.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2384\/1971\/files\/builder-series-slip-on-exhaust-triumph-speed-twin-1200-2025-plus--13.jpg?v=1763037977","url":"https:\/\/britishcustoms.com\/products\/builder-series-shorty-slip-on-exhaust-thruxton-speed-twin-1200","provider":"British Customs","version":"1.0","type":"link"}