BBB Cycling, 2x 11-T Derailleur RollerBoys Rear Wheel Pulleys for Urban and Road Bikes, 9- 10- and 11-Speed Campagnolo Shimano and SRAM BDP-02

EFFICIENT SHIFTING: The RollerBoys rear derailleur jockey wheels make shifting gears a breeze thanks to its 11-teeth pattern WIDELY COMPATIBLE: Suitable for use with a range of systems: Shimano 9-speed, 10-speed, and 11-speed, Campagnolo 9-speed, 10-speed and 11-speed, and SRAM 9-speed, 10-speed and 11-speed DURABLE: the derailleur jockey wheels are stronger than regular Nylon materials thanks to a 40% glass-fibre mix STEALTHILY QUIET: Sealed CrMo bearings make for a quiet and smooth operation compared to pulley wheels without ball bearings URBAN AND ROAD BIKES: these pulley wheels are suitable for road bikes equipped with either Shimano, SRAM or Campagnolo