TEC DUELLER 2-2 Big Bore Exhaust System – Street Twin 900, Street Cup 900, T100, T120
£499.99
IMPORTANT – READ BEFORE BUYING – This product is not USA 50 state compatible and cannot be used in the state of California. The product is strictly for off-road/race/demonstration use only. It is not road legal for emissions in the EU or the UK. It is the customers responsibility to use this item responsibly to comply with local laws. These parts are not BS-marked, E-marked or TUV-approved.
Awesome sound, more responsive.
Listen to our sound-test video below!
Designed and manufactured by us in 304 stainless 45mm tube.
The Big Bore pipes make your bike more responsive whilst saving considerable weight over the stock headers.
Completely bypasses Triumph’s CAT, de-restricting airflow from the engine and releasing a deeper sound.
The TEC marked silencers come supplied with removable hi flow baffles: We no longer supply big bore baffles. Easy to remove to modify your sound.
IMPORTANT – You MUST tell us on the notes of your order (at checkout) if your bike has a centre stand installed. We will then ship it with the alternative fitting kit.
PLEASE NOTE – On these models, these headers & silencers can only be fitted as a full system due to the specified models using a different frame. It is not possible to fit only the headers, or only the silencers. Similar slip-on silencers are available for the Street Twin/Cup only (please see our other listings)
Gaskets and fitting instructions included.
NOTE – On pre-2020 models, you can leave the Cat unit in place (but not connected) this allows a much quicker and easier fitting. Otherwise, the left lower frame rail needs to be loosened to allow the Cat to be removed. We have a YouTube video showing how to remove the cat unit.
From 2021 Triumph has introduced new Euro 5 models and have started phasing in anti-tamper, welded on rear link pipes to the Cat unit on some models. If this is the case on your bike the Cat unit will have to be removed before installing the system.
THIS SYSTEM IS NOT TUV APPROVED OR E-MARKED. As this system has no catalytic converter, it cannot be marked TUV approved.
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Customer Reviews
Hi, Just finished removing the standard cat and exhaust.
Fitted and tested the new exhaust and what a difference.
So much more responsive on the throttle and revs so much better. Genuine great performance upgrade.
Hello good people at TEC
Finally i got my exhaust system fitted on my Bonneville T120 after the small hickup with the frontpipes. Both stripping of the original pipes and fitting the new ones was pretty easy work. And a big shoutout to my local Triumph dealer here in Finland for providing all torque specs for motor mounts and frame rail. And all the other details for the Dueller system was provided with the kit. How now been fiddeling a bit with the baffles and I really like the sound of the quieter baffles(the more neighbour friendly) provided in the kit. Besides the loss of weight comparing to the original exhaust, the bike has much faster response on the throttle. And you can really feel the change in acceleration. And my goodness when you let the bike really stretch its legs and get the revs a bit over 5000 rpm. The sound of the roar gives me goosebumps... Nothing compares to the twin roar... So many tghanks to ypu all and i look forvard to do business with you in the future,
I had fitted the slip-on mufflers previously and I been reviewing the TEC Dueller 2-2 Big Bore since it is available but only managed to purchased and finally installed it on last week when I found a reliable local mechanic in my country. Thank God that I did't do-it-myself due to my ST is Euro5 spec which the cat MUST be removed and you definitely need an EXTRA hands and PROPER tools to get the job done. Fitting the pipes was easy but PLEASE read the instructions clearly prior to installation work, alternatively watching Youtube is good enough if you are a lazy reader. Overal I am very please with the pipes installed, my ST is lighter now and (feel) more power, really roaring all the way if I rev the engine. Highly recommended to those wish to change the pipes for the sound and performance.
What a difference from the standard set up. I've got a 2022 euro 5 T120 and getting the cat out was a nightmare but installing the Tec exhaust was a doddle. So much better than the stock exhaust and looks great to.
I haven’t as yet fitted the system as I sent it off to get ceramic coated
