First try Neil Spalding at Sigma Performance for a Sigma Slipper Clutch, what he doesn't know about these things isn't worth knowing http://www.sigmaperformance.com/ or if you can't get him, call Sarah Jordan at www.stevejordanmotorcycles.co.uk as they may have one in stock as they are a Sigma dealer, if you really want bling, try Nelly as he may have a full on STM slipper ... (see Cornerspeed in my sig).

Happy shopping