Check the listing for details. COMPBRAKE PRO RACE 9 CALIPERS [6 POT] GREY [PAIR]. Condition: New, Made in United Kingdom. Listed at 691.57 USD. The Compbrake PRO-RACE 9 caliper weighs only 3kg, offering a substantial reduction in corner weight and aiding the handling of your vehicle. This huge reduction in both un-sprung weight and rotating mass offers major benefits in terms of comfort and road holding. One of the major advantages of the PRO-RACE 9 design is the total weight saving over conventional brake callipers. Stainless steel brake pistons which are installed with a tapered knock off retaining spring to ensure a positive pedal feel when on and off the brakes. Piston sizes are specifically selected for each vehicle application, ensuring extremely high consistent levels of friction under braking. New high temperature external seals are installed for ultimate long-term reliability and protection. Our new secure 4 bolt bridge d.