This oversized derailleur cage fits Shimano's DURA-ACE RD-R9250 and ULTEGRA RD-R8150 Di2 rear derailleurs.
Kolossos is the Greek word for a statue, much larger than the original subject. Seems fitting for an oversized derailleur cage.
Imagine the performance of replacing your stock pulleys with a ceramic 12-tooth top pulley and a 19-tooth bottom pulley built on the stiffest cage on the market.
Besides being designed for World Tour victories, Kolossos gives you reduced friction, improved shifting accuracy, and better chain retention.
Ready to experience maximum drivetrain efficiency? Start going faster with less energy today!
Note: expected Ship Date: Early April
We know you can’t wait to get your hands on your new upgrades so we try to keep you waiting as little as possible. To do this we aim to keep as much of the “regulars” in stock, allowing us to ship your order to you and have you riding again as soon as possible.
Unfortunately, we are not always able to keep every item in the catalogue in stock. In such a case, if you are in need of a particular item which we do not have in stock, please contact us and we can order them specially for you. ***Please note that special orders may incur an additional delivery fee.***
The lead times on these special orders, custom products or items that are out of stock will be slightly longer. However, we will always endeavor to have these items landed in our warehouse and shipped off to you as soon as we can.
Kogel’s “Guaranteed Performance” Warranty
- Kogel Bearings takes pride in delivering a best-in-industry warranty. Their 2-year warranty means you can feel confident and secure about your next two seasons of riding.
- If a product fails in the first year, it will be replaced. The second year will require an annual bearing service.