BBB Rollerboys CERAMIC rear derailleur pulleys

BBB Rollerboys CERAMIC rear derailleur pulleys

FEATURES

■ 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.