The owner of this Triumph America had already put his bike in for an ECU remap and then – like many others – started experimenting with exhaust pipes. Now generally speaking the Bonnie, Thruxton and America owners go factory fit, while the 675 crowd go for the approved Arrow systems. Essentially all bought out of the Triumph dealer.

But others are now available, and this bike had a set onboard. We tweaked his fuelling slightly to match and off he went…

Ready to go – just a gentle map tweak via the ECU to match the new pipes...

Ready to go – just a gentle map tweak via the ECU to match the new pipes…