Welcome to CMC Motorcycles CMC are Yamaha motorcycle dealers plus we have probably the best selection of used bikes in the UK . Take a look at the new Yamaha motorcycles range. Motorcycle clothing and accessories from our online shop Roar Factory. Book your motorcycle in on our motorcycle dynometer and motorcycle tuning centre at CMC Clay Cross (Dyno Jet Approved). Motorcycle Parts for all bikes are available from CMC's three branches in Derbyshire, Staffordshire and Nottingham plus motorcycle accessories from Pazzo Levers, Racefit Exhausts, Power Commander V, Akrapovic, Renthal, etc and much more!