Aero Oversized Derailleur Cage - Shimano Dura Ace R9200 & Ultegra R8100 1st Gen Fully built in CNC machined

Fully built in CNC machined aluminum with an internal spine for maximum stiffness

making them as long-lasting as they are beautiful

Description: High Quality & Lightweight Titanium M5x10mm T25 Disc Brake Rotor Bolts

Optional "Gain Chain" Wax-Coated Chain: Our wax-coated chain improves drivetrain efficiency over a standard lube chain

Aero Oversized Derailleur Cage - Shimano Dura Ace R9200 & Ultegra R8100 1st Gen Fully built in CNC machinedBig pulley wheels were not the final step to free speed. Kolossos now comes in Aero, shielding your wheels and chain from the wind for those riders looking for maximum output. Aero Kolossos is built with Kogel ceramic bearings and road seals. Fully built in CNC machined aluminum with an internal spine for maximum stiffness, Aero Kolossos will help you cut through the wind as well as help you maintain shifting accuracy. When it comes to marginal gains,