Today CeramicSpeed introduces it’s Shimano 9100 series Oversized Pulley Wheel System. Compatible with the new Shimano 9100/9150 series drivetrains.  Available in standard and coated bearings and Red, Black or Limited Blue colors. The features of the new product include: 30 % lower friction Optimal performance with the 13-19T setup 3-5 times longer lifetime Made from…