Thanks for confirming things Simbo

If your mate uses CP7040 or CP5555 road calipers and theres only 3mm of radial clearance then yes these calipers with a 3mm lower radial profile would only fit under 18" Rondells with 368mm discs

I have some other AP race 6pots with a considerably lower profile and therefore will probably fit under 18" Rondells with 378's, if not I can either reduce the discs to 375mm or use 355's instead.

Unfortunately these will be sold as part of a front and rear kit (you'll need a hydraulic handbrake though):

AP 6piston/6pad race calipers, titanium air gap pistons, Metal Matrix Composite monoblock body.

AP 4piston/2pad race calipers, titanium pistons, water cooled, small piston area for correct rear brake balance.

Either 378x32mm or 355x32mm AP floating discs BOTH front and rear


Cheers, Stuart