TEC DUELLER 2-2 Big Bore Exhaust System – Speed Twin 1200 and Thruxton 1200 models


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.

Supplied with TWO sets of baffles: ‘Straight through’ and ‘6-hole’ baffles – Easy to swap out to modify your sound!

Front pipes & Silencers also available separately, can be mixed & matched with the O.E parts – please see 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.


Only 2 left in stock


Customer Reviews

Based on 4 reviews
Tommi Hakola
2 - 2 Big Bore with Speed Twin

Had it now 2 years and I like it a lot :)
Really nice sounds!

John Dawson
What a noise!

The quality of the pipes and cans is top class. Everything fitted spot on and looks absolutely mint but removing the cat was a pain. Not TEC's fault that. Time to start her up ???????????? what a brilliant sound and is awesome on full noise. It will now rev to 8000 in top gear???? Going to have to see about gearing up. The bike is certainly more tractable and fuel economy has improved. Just one little thing. The M8 bolts for the down pipes were missing. No big deal as we all forget things and I had some kicking around. But really chuffed with the pipis and silencers.

allan C.
TEC Dueller 2-2 exhaust for speed twin

not fitted the system as yet... fast delivery and well packaged... the system looks the business ! exactly how i wanted... it will give the bike a much more characterful look.... proper hardcore, like out of a mad max film

Paul Biggs
2-2 exhaust, Thruxton R

Looks amazing, good quality. Had it fitted by professionals, but was told it was an easy fit.
Still trying to get used to the sound as it's loud, even with the quietest baffle fitted, but that might be, because it's such a jump from the vance and hines.