Wilwood 140-17321 Wilwood 97-93 Mopar A/B/E/F/J Body Dynapro 12.19x0.81 Six Piston Front BBK - BlackWilwood 140 17321 Wilwood 97 93 Mopar A B E F J Body Dynapro 12. 19x0. 81 Six Piston Front BBK Black DynaPro 6 forged billet calipers are combined with 12. 19 diameter rotors for this group of traditional non ABS spindles on American muscle cars and vintage rods. The enhanced brake capacity and pad performance of the six piston calipers provide an intermediate level alternative to the bigger six piston kits. These kits compliment wheel, tire, and