Bbb Rollerboys Shimano Grx Jockey Wheel Set

The Roller Boys 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 Roller Boys you are good to go.High-end derailleur pulleys:- High-end and super easy-to-install pulleys with special tooth patterns for super quick and smooth shifting gears.Features:- 11x13T CrMo derailleur pulleys- Composite material provided by EMS Swiss, with 40% glass-fiber mixture- Sealed bearings with aluminium cover for optimal durability- Compatible with 11-speed Shimano GRX (810/815)Specifications:- Pulley size: 11/13T- Bearings material: CrMo- Gears: 11-speed- Compatible with brands: Shimano- Part materials: Grivory EMS- Weight (g): 27