Disc Brake Kit designed to be fitted on the Chase ACT 1.2 and 1.0 frames exclusively Note: Requires a rear hub with ISO 6 (6-bolt)/ Disc ready setup. Sold without hydraulic braking system. May fit other brands of frames, but designed for Chase frames. Includes: Full CNC Alloy Adaptor Mount for a 120mm Disc Brake Roto only - 140mm disc adapter sold separately if needed 10mm rear axle set up, pin bolt security Left Side Black Chain Adjuster / Disc Brake mount / anti rotation locking shelter and anchor bolt 120mm Disc Brake Rotor fastening system ISO 6 screws with air vents 6 Disc screws and washers included 2 disc spacers 0.5mm thickness each 2 sets of Brake pivot bolt covers to replace the standard brake mounts for a clean, aero design look. (Black and Polished pair)