Shimano Deore M506 Disc Brake - Left Front - 950mmShimano Deore M506 Disc Brake Left Front 950mm Featuring an opposing piston design, the Deore M506 Disc Brake works to prevent vibrations caused by prolonged braking at faster speeds, bringing your speed down powerfully and smoothly with each trigger squeeze. Containing Shimano's own environmentally friendly Mineral Oil Braking Fluid, brake fade on expansive downhill trails is also significantly reduced due to the fluid's high boiling point. Built