kos11-12

Hi there,
it is time for my car to have new brakes and I am planing to go big blacks and maybe 993 rear calipers ,the car will be 50/50 street and track , I am still not sure if for the C4 I can stay with the 55 bar or need to go 60 bar valve,also can I stay with the 23,81 master cylinder or go for the RS 25,4mm ? and to finish in style, one more sily question would the front calipers fit at the back.

thanks for your advise Konstantin 964 C4 1992

Bill Verburg

stock 964C4 23.8mm m/c is fine, yes, use 993 rear calipers w/ a bbk front

garrett376

Hi Konstantin, on my old narrow-bodied race car I ran big blacks in front with 993 rear calipers on the stock rear rotors with no proportioning valve in place. For me, it had excellent brake balance using the same pads front and rear (Performance Friction PFC97's)

kos11-12

thanks for the info ,clouds are gone
Konstantin