Kogel 12/14 Tooth Shimano Road Oversized Ceramic Pulley Wheels
An excellent watt-saving upgrade, these Kogel 12/14 Tooth Oversized Ceramic Pulley Wheels install easily into existing Shimano Dura-Ace 9100, Ultegra R8000 and 105 R7000 series road bike rear derailleurs. Their oversized configuration combines with the minimally sealed but durable ceramic bearings to reduce mechanical friction and heighten drivetrain efficiency, allowing the rider to pedal with greater fluidity and power.
Features
- Designed to maximise the performance of existing Shimano Dura Ace R9100, Ultegra R8000 and 105 R7000 rear derailleurs
- Easily install into the stock rear derailleur cage
- 12-tooth top pulley and 14-tooth bottom pulley
- The oversized pulleys reduce chain articulation to lower mechanical resistance
- Ceramic pulley bearings with minimal road seals markedly lower drivetrain friction
- Two year, guaranteed performance warranty on the bearings
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