Shimano Speed Kolossos Oversized Derailleur Cage - GRX 2x (11- and 12-speed, mechanical & Di2) Color:Black Aero Kolossos for Sram AXS

Aero Kolossos for Sram AXS has a 14-tooth upper and 19-tooth lower wheel and fits all Sram 2x12 Red and Force derailleurs

Previous generations might have used the short version

just listen to our friend and badass racer Allison Linnell

tight lock that prevents rotor wobble and ensures consistent braking performance

Replacing your stock pulleys with a ceramic 12-tooth top pulley and a 19-tooth bottom pulley

Shimano Speed Kolossos Oversized Derailleur Cage - GRX 2x (11- and 12-speed, mechanical & Di2) Color:Black Aero Kolossos for Sram AXSKogel 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