Kogel Kolossos Shimano R9100 and R8000 Road Seal Oversized Pulley Cage
Easy to install onto Shimano R9100 or R8000 series di2 or mechanical rear derailleurs, this Kogel Kolossos Road Seal oversized cage and pulley wheel combination is a watt saving upgrade for any high-end road bike. The 12-tooth upper and 19-tooth lower pulley wheels reduce chain articulation and have minimally sealed but durable ceramic bearings to significantly improve drivetrain efficiency.
The pulley wheels are housed within a tremendously stiff cage that cancels the vague gear shifting often associated with oversized setups. The cage integrates a chain catcher, and this combines with the extended tooth profile of the lower pulley wheel to maximise chain retention and minimise jamming over rougher surfaces.
- Rear derailleur cage
- 12-tooth upper pulley with ceramic bearings
- 19-tooth lower pulley with ceramic bearings
- An oversized derailleur cage and pulleys wheels for Shimano Dura Ace R9100 and Ultegra R8000 series derailleurs
- This cage and pulley combination is a direct replacement for the stock derailleur cage
- 12-tooth top pulley and 19-tooth bottom pulley
- The oversized pulleys reduce chain articulation to lower mechanical resistance
- A long tooth profile on the lower pulley affords better chain retention
- Ceramic pulley bearings with minimal contact "Road" seals markedly lower drivetrain friction
- Two year, guaranteed performance warranty on the bearings
- The Kogel cage is the stiffest available, improving rear derailleur gear shifting
- A chain catcher built into the cage around the lower pulley prevents chain jams
- SS (short) cage and GS (medium) cage fit
- Easy installation right out of the box
- Compatible with 11-speed Shimano Dura Ace R9100 and Ultegra R8000 series Di2 or mechanical rear derailleurs
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