Key Points First ever 12 speed drivetrain in cycling Cassette offers a 500 per cent gear range Upgrade applied to XX1 and X01 groupsets 12 speed?!…
Features
Guy Martin: Riding with the Isle of Man TT ace
Hitting the trail with the plain-speaking, boat-building, bike racing Guy Martin; far more than just 'that sideburns bloke off the telly'.