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Ships within 48 hours · Estimated delivery Aug 20 - Aug 25
It fits 11 and 12 speed Ultegra and Dura Ace derailleurs
fine‑tuned to shave watts and maximize drivetrain performance
SLX BR-M666
tight lock that prevents rotor wobble and ensures consistent braking performance
Shimano Speed Kolossos Oversized Derailleur Cage - GRX 2x (11- and 12-speed, mechanical & Di2) Color:Black It fits 11 and 12Kogel Speed Kolossos for Shimano GRX 2x (11 & 12 Speed, Mechanical & Di2): The Fastest Oversized Derailleur Cage for Gravel Gravel doesnt mean slow. The all new Kogel Speed Kolossos for Shimano GRX 2x (11 & 12 speed, Mechanical & Di2) is designed to bring unmatched efficiency and performance to mixed terrain riding. Whether you're racing gravel, tackling epic adventures, or just looking for a smoother, more efficient drivetrain, this oversized
