Standard brake caliper type

[Paulprior]

Hi
I thought i would fit new seals etc in the calipers while doing my other assorted refurb, i just spoke with Biggred who suggests i have Sierra calipers which could be 54 or 60mm single pistons, as i am away from home for a while and unable to measure them does anyone know the answer for a 95 500?
Thanks
Paul

[N7GTX]

On Euro Car Parts for the front calipers that fit a Sierra Cosworth, an XR4x4 and an XR4i all show a piston diameter of 54mm and 43mm for the rears (253mm disc). But I have been known to be wrong......

[RobXjcoupe]

Griff 500 uses Sierra cosworth 4wd front and rear discs and calipers as oem parts.