Most Wilwood 6pst. calipers are 9.44" long. The only ones as large as the 6pst. PBRs are the giant TC6R calipers they sell for SUV applications. I don`t have an exact measurment for them but Baer 6R calipers are also much larger than the typical Wilwoods (possibly than the PBRs too) and fill out a 19" wheel nicely on 14" rotors. Mark SC&C
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