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!

• Composite material provided by EMS Swiss, with 40% glass-fiber mixture
• Complete set of bushings for different shifting systems included
• Equipped with special internal lubricant system
• Compatible with SRAM

SPECIFICATIONS

• Compatible with brands: SRAM
• Part materials: Grivory EMS
• Gears: 10-speed, 11-speed, 9-speed
• Bearings material: CrMo
• Narrow wide: No
• Pulley size: 11T