2-into-1 Exhaust System

2-into-1 Exhaust System
2-into-1 performance full exhaust system.


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This product is not for sale in California and use is restricted for closed course competition only. Not intended for street use on any pollution controlled motor vehicle. Any order constitutes Buyers offer to Seller and agrees to the Terms and Conditions stated here upon purchase or acceptance.



Developed for competition use in the Thruxton Cup, the British Customs 2-into-1 Exhaust is a track ready system engineered to get you off the line and down the back straight, ahead of the pack. The 2-into-1 left-mount Exhaust system gives you unparalleled low-end grunt with a substantial increase to mid-range performance. Designed to give your Triumph Bonneville a stock appearance looking at things head-on, that all starts to change as you circle around. The right side of your bike is completely exposed: the alternator case, sprocket cover and driveline deliver form via function while the right side header crosses over to the left via the factory crossover location to merge into a 2-1 collector. Available in a brushed stainless. The brushed stainless system will develop a lustrous pattern over time, creating a raw performance look.


  • Increased performance and power
  • Aggressive styling
  • Exposes chain, sprocket, and driveline
  • Manufafctured from stainless steel
  • Available in brushed stainless steel finish
  • Stainless steel clamps and mounting hardware included
  • Superior weather resistance
  • Smaller mufflers providing placement options


NOTE: This product has been developed as a performance upgrade, check with local regulations prior to purchasing and installing this part. Not DOT approved. Laws concerning this product vary from state/province to state/province. Your state/province may prohibit its use on public roads or restrict its use to novelty, show use, off road areas, or race facility areas only, in some states/provinces off road use. Removal of O2 sensors required on EFI models. This performance upgrade requires tuning of your motorcycle. Not compatible with a centerstand.

This part fits the following models
Triumph Bonneville T100 EFI - 2009-2016
Triumph Bonneville T100 Carb - 2002-2008
Triumph Bonneville Mag - 2009-2015
Triumph Thruxton 900 EFI - 2009-2016
Triumph Thruxton 900 Carb - 2004-2008
*Refer to Description in event of VIN specific fitment

Customer Reviews 1 item(s)

when paired with the air injection block off and air box elimination kit, I got 69.83bhp with a power commander V. doesnt hurt that it is lighter than stock and has a badass bark to it!
Review by nicholas morris / (Posted on 3/7/2016)

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Q & a

Product Questions

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Hi,is it possible to fit the 2-1 system to exit the other side of the Bonneville?
Great question ! Unfortunately the header direction cannot be changed although this can be achievable by using custom headers and using our reverse cone exhaust here: http://www.british-customs.com/mini-reverse-cone-exhaust
Customer Support answered on July 7, 2016
Will this fit a 2016 Triumph Bonneville T120? If not are you going to design a 2 into 1 to fit the new T120?
Great question ! Unfortunately this will not fit the liquid-cooled twins although please be sure to sign up for our newsletter to be updated on our latest releases and news as we are having new products out shortly.
Customer Support answered on July 7, 2016