The Tektro Orion HD-M750 Disc Brake system offers high power and controllable braking. This 4-piston brake is suitable for e-bikes with center motors. FEATURES: 4-piston disc caliper offers high power and controllable braking 2-finger brake lever Open system Recommended for e-bikes with center motors Easy installation, adjustments and maintenance Compatible with I-spec II and Matchmaker with Tektro adapter SPECS: Rotor Included: No Pad Compound: Sintered Hydraulic Hose Length: 1900 Brake Lever Use: Left Hydraulic Fluid Type: Mineral Oil Brake Lever Actuation: Hydraulic Designed for ebike: Yes Adjustable Reach: Yes Brake Caliper Type: Post Mount