Solid Billet 2 Piston Rear Brake Caliper The HEL Performance 84mm Axial Mounted Rear Caliper. Fully CNC machined in-house from solid billet aluminium to offer strength, minimal weight and stiffness. The calipers come with two 32mm opposed pistons and take a standard pad to offer you... MSRP: Was: Now: $448.99 - $534.98 Choose Options