Anyone know of the piston bore on the OEM brembo's. Or possibly a link to the complete specs. I am doing a comparison to other possible less exspensive caliper and rotor upgrades. My friend just got his C4 brakes on his S13 and I have been inspired since he can machine me any part I need to get some big brakes installed.

 

Front: 38 (1.50) × 2 + 44 (1.73) × 2
Rear: 40.0 × 2 (1.575)

mm(in)

 

thank you.