9.3 average score from 28 reviews

RollerBoys 12T sr

Model number: BDP-06
  • 12x12T CrMo derailleur pulleys
  • Narrow Wide tooth profiling ensures ultimate chain retention
  • Composite material provided by EMS Swiss, with 40% glass-fiber mixture
  • Sealed bearings
  • Compatible with SRAM 1X11
More information

RollerBoys Derailleur Pulleys

The Rollerboys will make your bike ride so smooth that you will never stop anymore! The composite material is strong and durable and the special teeth pattern makes sure you can shift to a higher gear with the speed of light! High quality pulley wheels are a must have for every serious bike rider, with the RollerBoys you are good to go!

RollerBoys 12T sr RollerBoys 12T sr


  • Pulley size 12T
  • Bearings material CrMo
  • Gears 11-speed
  • Compatible with brands SRAM
  • Part materials Grivory EMS
  • Narrow wide Yes


  • Weight (g) 26


Narrow Wide tooth profiling ensures ultimate chain retention.