TRP Spyke Disc Brake. Features: Dual sided mechanical disc brake system for MTB use Two opposing pistons engage the rotor evenly from both sides Aluminum actuation arm and caliper body Ultra-grippy semi-metallic pads great for dry conditions, wears faster when wet Includes twin piston caliper and mounting hardware (rotor and adapter sold separately) Spyke brake lever set sold separately (compatible with any linear brake levers) Specifications: Brake Type: Mechanical Disc Brake Lever Pull: Long Pull Brake Mount: Post Mount Brake Pads: Semi-Metallic Barrel Adjuster: Yes Rotor Included: No Color: Black Weight: 170g