Red '05 XTX at Clapham Common Station. Standard pipes. Rider was wearing a matt black Caberg helmet and a green Hi-Viz vest with a rucksack.

I was idling 2nd car back and he stormed past me as the lights changed.

Any takers?

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Racing
(a. & n.) from Race (v.t./i.)
The alchemy that turns base metals into heat, noise, power and motion.