Aprilia Sigma Slipper Clutches

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.
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