CeramicSpeed OSPW Pulley Wheel System Shimano 9100 9150 8000 SS 8050 SS Alloy Pulley Carbon Cage BLK CheckoutSpec= A2 (use with A2 upper assembly and A2 remote only) 2 coil springs at the 2 coil springs at the rear adds additional comfort on rough terrain The eeWings Mountain titanium cranks were designed to keep up with the rigorous demands of the most aggressive trail and enduro mountain bikers though they will benefit any rider who puts a premium on durability stiffness and weight Largest Cog 32 Fits Model Ultegra R8000 SS Fits Model Ultegra R8050 SS GS Fits Model Dura Ace R9100 Fits Model Dura Ace R9150 Fits Brand Shimano Drivetrain Speeds 11 Defined Color Black keyword search OSPWS border top:3px solid #f0f0f0