Thread: non brembo B15 brake calipers vs NX ad22v

What sizes are the non brembo B15 brake calipers & NX ad22v?
Which is better/bigger?

Are they an upgrade?

The B15 caliper pistor bore is 57.2mm and the NX caliper piston bore is 54mm. The biggest difference is the overall diameter and width of the rotors for each. The B15 takes a larger 11" rotor vs the 10" rotor on an NX. But the NX has a 26mm wide rotor vs a 22mm wide rotor for the B15.

End result: The larger diameter rotor and caliper piston bore can apply a higher brake torque (with less pedal movement) but has to sacrifice heat-resisting abilities by using a thinner rotor.

Has anyone found another rotor that's the same diameter but thicker?

Also, Kyle is talking about the B15 Spec V, SE-R and SE calipers. The other B15s have similar calipers and rotors to the P10.

Do you know the sizing for those?

Since this is the SR20 forum, I am only talking about a B15 with an SR20DE engine from the factory in the USDM and its brake calipers. I believe the B15 QR-powered, non Brembo brakes had the same caliper and rotor but I cannot be quoted on that.

The difference is really CL25VA and CL25VB (rotor and caliper bracket size to allow the one inch larger rotor to be used)

The 00-01 se's and all specv/ser have the same front brake calipers and rotors. The rear uses the same rotors, but the caliper brackets are different, the pads are a different shape. Caliper is the same though....

The Brembo factory cars have the same rear caliper but a taller bracket to hold a larger rotor. Same caliper and pads as the non-brembo cars.

Just found this...




looks like i broke photobucket....