Kogel Kolossos Road Seal Oversized Pulley Cage – Dura Ace R9100/Ultegra R8000 – Black / Dura Ace R9100/Ultegra R8000

Greek for a statue that is larger than the original, Kolossos is a fitting name for this oversized pulley cage. Designed to deliver maximum drivetrain performance, the Kolossos Oversized Pulley Cage will enable you to go faster with less effort. It does so by introducing lower drivetrain friction, for improved shifting accuracy and better chain retention. That's because it pairs an incredibly stiff, aircraft grade aluminium cage, which combines drivetrain precision and power transfer, with two oversized pulleys, a large top pulley and an even larger bottom pulley. The chain articulation is reduced due to the larger pulley wheels decreasing drivetrain friction, for a smoother ride and...

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