The Beringer Aerotec caliper is CNC machined from billet aluminum and anodized for an attractive finish. It features 6 pistons inside along with high performance seals. The huge brake pads mean a larger surface area for more stopping power and an even better feel! When used with the BRO12 master cylinder, the Beringer 6 piston brake is more progressive and stops better than any other supermoto brake system. Aerotec Caliper - XR2A Includes brake pads 1100R2 - Aggressive Race - More bite, best pad for racers! NOT FOR STREET USE! 1100R8 - Endurance Race - less bite, great for rain racing! Longer life, perfect for endurance racing or track day rider who wants more life out of their pads! NOT FOR STREET USE! 1100S - Sport - Perfect for street use, does not require heating up like the race pads. Axial Caliper, no adapter required! Bolts directly to the fork bottom. Pair with: Beringer Aeronal Rotor For Kawasaki and Suzuki models, use 310mm rotor. Beringer Aerotec Master Cylinder BRO12 - 17.5mm piston.