KOGEL KOLOSSOS Oversized Pulley Cage Shimano Dura-Ace R9200 & Ultegra R8100 Gold - Black

**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.

**Compatibility:**This oversized derailleur cage fits Shimano Dura-Ace's RD-R9250 and ULTEGRA RD-R8150 Di2 rear derailleurs.

** Please note Installing this oversized derailleur cage typically requires replacing your chain to accommodate the larger pulleys.