Arrow Kawasaki ER-6 race system, £1032
Time used: Two weeks racing at the TT, North West 200 and weekend at Oliver’s Mount
What good: The Arrow titanium system was designed in conjunction with road racer Ryan Farquhar at Arrow’s R&D headquarters in Italy. Simply put it’s the system used by the majority of riders in the new Lightweight class.
According to the manufacturer it’s the best performance system for Kawasaki’s ER-6. I had around 73-74bhp (standard power is 71bhp) with just the pipe and a Power Commander ruining a standard engine.
The exhaust is lightweight, but still robust and took the beating of the TT course without any problems. Not only does it add performance, but sounds and looks amazing.
What not: It’s not road legal by any means, your neighbours will be instantly complaining, in fact your neighbours in the next county will also be disgruntled.
At some tracks with a tight decibel limit noise from the megaphone exhaust might be a problem. It can also be problematic to fit with a standard radiator.