SRAM Guide R Disc Brake - 900mm Hose Length - BlackSRAM Guide R Disc Brake 900mm Hose Length Black Whats it going to take to ride that line? Its steep. Its rocky. Youve passed it a hundred times. But not this time. With SRAM's Guide R, you have the power. Proven 4 piston calipers give you smooth, one finger control. Features like Reach Adjust let you dial it in just right. And Guide perfectly complements other SRAM components and gives you flawless performance on every ride. Lever Material: Aluminum