Pro-Twins should be able to set you up with 4-pad calipers for around £200 including lines (which you will need as the fittings are different). Pro-Twins - 01342 892 888 )Robert/Chris/Brett - these guys are seriously helpful). If buying a slipper, make sure you get one with a hard wearing clutch basket - some of the cheaper ones are made from cheese. The ergal rating defines the hardness of the alloy - higher-better. Also, I intend to change to alloy friction plates as soon as poss, as the standard steel plates hammer the alloy basket. I believe the alloy plates for the ST4 are suitable. BTW, a well set up slipper clutch is well worth the money. Good luck. Spinoli |