GP Slip On Exhaust for Triumph Thruxton / Speed Twin (2016+)

SKU: BC902-090-BR
Sale price$994.95
Only 3 units left

With a handcrafted look that takes its inspiration from Moto GP exhausts seen on the track,

British Customs’ GP Slip On Exhaust is a unique choice for your Triumph, providing an updated alternative to the typical classic style exhausts available for Triumphs while delivering real performance benefits.

The GP exhaust is the lightest British Customs stainless steel exhaust system, manufactured from lighter 20 gauge stainless steel (rather than 18 gauge used in our other exhausts) and updated internally with our new race core instead of the heavier, louvered cores used in the Predator Pro and Sleeper Pro Slip On Exhausts. The perforated baffle core is wrapped in stainless steel packing and allows for increased air flow, less weight, and a higher pitch performance exhaust sound.

Each segment of this stainless steel exhaust system is rolled, hand shaped, fitted, and brushed in Gardena CA, manufactured with care by our expert craftsmen who leave the welds exposed to preserve and feature the craftsmanship poured into it. Design features like rubber isolated exhaust hangers reduce engine vibration and bracket fatigue, and each exhaust is finished with a riveted stainless steel end cap making the exhaust serviceable if you send it back to us for repacking.


  • One of the first & original "GP" designs for Triumph modern classic models
  • 100% Stainless Steel Construction
  • Light - weighs approximately 2.65 lbs per muffler
  • Bolt-on installation using factory mounting points
  • Perforated baffle core for higher engine flow, weight savings, and race sound
  • Rubber isolated exhaust hanger to reduce bracket fatigue and engine vibration. 
  • Exposed TIG welds for a handcrafted look

NOTES: The GP Slip On Exhaust will not work with a center stand.

Liquid Cooled Bonneville T100/T120 prices are higher compared to other models due to 2x gaskets that are included for installation.

Installation Guide (PDF)


Frequently Asked Questions


On orders over $399 (lower 48 states only)


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