Oversized rollers system in machined 7075T6 aluminum. Lighter and with last generation bearings. Geometry designed and adopted for large rollers up to 16 teeth, considerably reduces the fiction of the chain and make the change smoother and more precise.
Compatible: Shimano Dura-Ace 9100/9150 & Ultegra 8000 11v
Available in three colors
It can be installed in changes of 10 and 11v before 6800 and 9000, but its perfect operation can not be guaranteed.