Two Brothers' new Black Series exhausts are said to be "dyno-tuned and track-tested". They feature black Teflon-coated cast magnesium end caps, billet aluminium inlets and outlets and reinforcement bands. 

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They also feature special black anodised 7075 T-6 aluminium bolts.

Prices for the Black Series exhausts range from £495 (for the R6, GSXR600/750, Ninja 250, CB1000) to £940 (2010 R1, B-King).

To see if they make one to fit your bike, call 0113-238-3708 or click here.