Our unique Midsize Hyper Crit System is anIndustry First14-Tooth/14-Tooth complete pulley wheel system. Designed due to customer demand, the Hyper Crit System provides the benefits of a complete system but yet is a bit smaller than it's big brother, our Oversize Hyper Speed System. Locally produced aerospace grade carbon fiber cages, CNC machined anodized pulley wheels, and coated hybrid ceramic bearings all combine to provide the lowest friction possible along with durability that's unmatched.
ALL SLF MOTION PARTS ARE DESIGNED, TESTED, AND BUILT BY HAND IN PAWNEE, ILLINOIS - USA
Compatiblity (see photos below) - Shimano
Model 679 (Ultegra 6700/6800 and Dura Ace 7900/9000) - Compatible with cassettes up to 28T
Model 891 (Ultegra 8000/8050 and Dura Ace 9100/9150) - Compatible with cassettes up to 32T