BBB RollerBoys 12T Sram Narrow-Wide Jockey Wheels Black

11T.

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.

Bearing type Standard

Compatible with the following SRAM systems: SRAM 9.0SL (2001/2002) & 9.0 (2003). SRAM X.7, X.9, X.0 & XX (< 2011). SRAM Apex, Rival, Force & RED (< 2011).

Compatible with: shimano.

Made of: Grivory EMS.