RollerBoys (jockey Wheels) equipped with low friction ceramic bearings for ultra-smooth glide and exceptional durability.
- Lubricated with special ceramic light oil for extra smoothness
- Composite material provided by EMS Swiss, with 40% glass-fibre
- Complete set of bushings for different shifting systems included
- Ceramic bearings
- 11T. Compatible with Shimano 9, 10 and 11-speed / Mega Range and Campagnolo 11 speed.
BBB BDP-12 RollerBoys Ceramic Jockey Wheels