Description
High quality pulley wheels are a must have for every serious bike rider, and the RollerBoys from BBB are made for a smooth ride. The composite material is strong and durable, and the special teeth pattern makes for speedy shifting to a higher gear.
Narrow Wide tooth profiling ensures ultimate chain retention
Composite material provided by EMS Swiss, with 40% glass-fibre mixture
Sealed bearings
Compatible with SRAM 12-speed EAGLE MTB
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