Hayes Dominion T4 Disc Brake and Lever - Rear Hydraulic Post Mount Black. The Hayes Dominion T4 is optimized for Enduro and DH riding with a USA-made carbon lever blade titanium fasteners throughout and a strong-clamping 4-piston caliper.Low-effort lever input coupled with high-fidelity power output for optimum braking feel and control A carbon lever blade and titanium fasteners take Dominion performance to the next level. Pre-bled and assembled with Hayes K2 hose: The stiffest hose possible for maximum power and control transmission TECH SPECS Adjustable Reach Yes Brake Caliper Type Post Mount Brake Lever Actuation Hydraulic Brake Lever Use Left or Right Color Black Hydraulic Fluid Type DOT Pad Compound Semi-Metallic Rotor Included No