Road Bike Pulley Wheels HollowCage Carbon For Shimano 9100/8000 11 Speed 12/18TFeature: 12 dB noise reduction over Dura Ace Precise gear shifting Aerodynamic Wattage saving Lightweight design Single-guide plate construction Suitable for: Shimano Dura Ace 9100 / 9150 / 9170, … Continue reading →