9.2 average score from 34 reviews

RollerBoys 13T-13T

Model number: BDP-09
  • 13x13T CrMo derailleur pulleys
  • Composite material provided by EMS Swiss, with 40% glass-fiber mixture
  • Sealed bearings with aluminium cover for optimal durability
  • Compatible with 12-speed Shimano MTB groupsets
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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 13T-13T RollerBoys 13T-13T


  • Pulley size 13T
  • Bearings material CrMo
  • Gears 12-speed
  • Compatible with brands Shimano
  • Part materials Grivory EMS
  • Narrow wide No


  • Weight (g) 30