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Ships within 48 hours · Estimated delivery Aug 27 - Sep 1
making them as long-lasting as they are beautiful
Select road bearings for lowest friction
Updated to a press fit bottom bracket system
low‑friction ceramic pulleys housed in sealed labyrinth bearings
Fully built in CNC machined aluminum with an internal spine for maximum stiffness
Aero Oversized Derailleur Cage - Shimano Dura Ace R9200 & Ultegra R8100 1st Gen making them as long-lasting asBig 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,
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