Take Raceface&';s popular Turbine 35mm stem and turn the volume up to R. Increased strength to handle the harshest aggressive all mountain riding combined with an update to 0-degree size for optimized fit and performance. CNC Aluminum 0degree rise for perfect fit on aggressive bike frames Extensive CNC machining for weight reduction without impacting strength TopLock faceplate design for easy and secure installation 40mm length 35mm clamp +/-0 rise 1 1/8 steer tube Black