+ There are two different piston size of rear calipers for WK2. Please check your rear calipers to make sure you order the correct sizes.
*TrackHawk Front calipers are the same as SRT8 except with yellow color and longer legs for larger rotors (400 vs. SRT's 380mm).
Brake Bias Analysis:
Front Caliper Piston Area (CM^2)
Rear Caliper Piston Area (CM^2)
Rotor Size (F/R)
Rear RB BBK#
The above table indicates the newer SRT8 front 6 pot calipers set up requires a larger 4 pot calipers & rotors to keep the system in balance.
#This rear BBK is equipped with our RB4M3 calipers (32/34mm piston dia.) and comes with a larger rotors (390x30mm), and pad (PD968) and will make the rear brake works harder and thereby alleviate the brake stress on the front for a healthier, and more balanced brake system.