3604209301 99335142510 & 99335142610 Aftermarket but made to the same dimensions and specifications as the original Porsche 993 turbo brake calipers “Big Reds” can be used to upgrade the braking system on your Porsche 964 / 993 model with bigger brake disc, brake pads from the 993 Turbo should be used with these brake calipers. Direct fit on 993's and 965 3.6, other cars will need spacer brackets.