Sigma Performance is a specialist Racing parts supplier. Our parts service provides slipper clutches for all makes of motorcycle with most bikes in the 600 Super-sports and Hyper-sports categories being looked after.
Since we first fitted a slipper clutch to our Ducati in 1998 our slipper clutches have won British championship races, British Supersport championships, TT and NW200 races and many more. The range now has in excess of 50 different fittings suitable for nearly 70 different bikes.
Sigma Performance now specialises in the slipper clutch market providing many different designs and technical options for over 50 different bikes. From simple Ducati road and track day fittings to clutches that regularly get podiums in World Supersport. Neil Spalding of Sigma also attends most MotoGP races as one of the top technical journalists in motorcycling.