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Silvant
08-19-2004, 09:19 AM
B5 S4 rear brakes and B5 A4 rear brakes??
thanks in advance.
planning on an upgrade to this and just making sure it is worth it.

falcon1
08-19-2004, 05:41 PM
A4 = 245x10 solid 8D0 615 601 A
S4 = 256x22 vented 8D0 615 601 D Caliper carrier 8D0 615 425
S8 = 280X22 vented 8E0 615 301 B Caliper carrier 4D0 615 425 A

S4 Piston housing 8D0 615 423 C (LEFT) 8D0 615 424 C (RIGHT)
S8 Piston housing 4D0 615 423 E " " 4D0 615 424 E ""

The common upgrade for the rear of an S4 is to hang S8 rotors which require new caliper carriers.

Good luck

Silvant
08-19-2004, 09:54 PM
thanks.. im actually replacing my a4 rears with the s4 set up.