■ RollerBoys equipped with
ceramic bearings for ultra-smooth gliding and almost no
resistance.
■ Equipped with special ceramic light oil for extra smoothness.
■ Composite material provided by EMS Swiss, with 40%
glass-fiber.
■ All bushings for diff erent shifting systems included.
■ Ceramic bearings.
■ 11T. Compatible with Shimano 9 and 10-speed / Mega
Range.