4 OR 6 PISTON DIFFERENTIAL BORE CALIPERS:

Calipers are made to AP Racing's exacting standards and use two or three pairs of opposing pistons, depending on the application, in each caliper, trailing edge pistons often have a slightly larger diameter than the leading one's, to compensate for mechanical end load and protect the pads from tapered wear. On road cars with thin spoke alloy wheels the visual effect of the brakes is important. The calipers are hard anodised and then finished with a tough Red or Black hi-tech PTFE paint with the AP Racing logo machined into the casting in a contrasting colour.