Product Info XTR M9120 brake lever and M9120 4-piston hydraulic disc brake caliper Increased stopping power & improved modulation for greater dowhnill confidence and control Additional contact point on handlebar increases stiffness by 8% vs BL-M9020 Quicker engagement & shorter, adjustable free stroke ServoWave technology Toolless adjustable reach Pre-assembled with SM-BH90-SBM high power hose Includes N04C metal pads w/ fins