The CP8530 / CP8540 and CP8560 range of 4 piston World Radi-Cal brake calipers from AP Racing have been developed for front use on performance road vehicles fitted with large diameter discs (330-400mm). Manufactured from a 2 piece forged aluminium body with alloy pistons fitted with dirt seals to prevent contamination of the pistons and bores. The calipers benefit from an advanced anti corrosion paint finish for a long lasting great finish.Ideal for performance vehicles with large brake discsFits over large disc sizes (up to 400 x 32mm)Alloy pistons with seals to prevent dirt ingressAnti rattle pad clips reduce noiseAP Racing CP8530 / CP8540 and CP8560 caliper ranges all share the same features apart from piston sizes and the thickness of disc they accept.CP8530 piston sizes - 38.1mm x 2 / 41.3mm, piston area - 49.56cm². Suits 32mm thick disc.CP8540 piston sizes - 28.6mm x 2 / 38.1mm x 2, piston area - 28.8cm². Suits 28mm or 32mm thick discs.CP8560 piston sizes - 27.0mm x 4, piston are