KOGEL Kolossos Pulley Kol-R9100

Kolossos - it’s all in the Name Kolossos is the Greek word for a statue, much larger than the original subject. Seems fitting for an oversized derailleur cage with a 19 tooth bottom wheel. Besides reduced friction, this cage is built with shifting accuracy, gravel worthiness and chain retention in mind.

Compatibility This model will fit on Dura Ace R9100 and Ultegra R8000 series derailleurs. This includes mechanical and Di2 as well as short (SS) and medium (GS) cage lengths.

Why Upgrade/Replace Your Derailleur Cage? Many oversized pulley systems are plagued with vague shifting due to the lack of stiffness of the components. Plus, your stock derailleur's efficiency is limited by the size of the factory derailleur pulleys.

Standout Key Features • Built to offer low friction while maintaining shifting accuracy. • Built for road as well as off-road use, we are not here to restrict your adventures • Engineered with a long-tooth profile on lower pulley for better chain retention. • It's basic physics. You ride slower though sharp turns and faster though wide ones. Well, your chain flows faster around larger pulleys and slower around smaller ones. Bigger really is better...and faster! 

• 2-year Manufacturer's Performance Warranty on the cages • Design offering low friction AND shifting accuracy • Long-tooth profile on lower pulley for better chain retention • Chain catcher on lower pulley to prevent chain jams • No limits on-road and off-road compatibility • Cage fit and easy installation right out of the box • Reduced drag associated with clutch derailleurs and 1x setups