Product Info XTR M9100 brake lever and 2-piston hydraulic disc brake caliper Uses a carbon-blade lever, magnesium cylinder, straight connection caliper and flat-mount type brake pads to minimize weight Additional contact point on handlebar increases stiffness by 10% vs BL-M9000 Quicker engagement & shorter free stroke Adjustable reach Pre-assembled with SM-BH90-SS high power hose Includes K04Ti metal pads Weight: 312g per side (lever, caliper, hose and RT-MT900 rotor)