Two Brothers Yamaha Diversion exhaust

American exhaust firm, Two Brothers Racing, has developed this tidy under-slung exhaust for the 2009 Yamaha Diversion 600.

This 4-2-1 system has a claimed 3.8bhp peak power increase, increases torque by 2.8ftlb and shaves 4.5kg off the stock system.

It comes with the M2 Vale silencer with the choice of aluminium, carbon fibre and titanium finished with the latter being priced higher than the aluminium option.

Prices start from around the £600 mark.

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