Sram X4 Rear Derailleur Hybrid Bikes The rims offer great stability

The rims offer great stability for tires up to 40c

Compatible with GS cage rear derailleurs

these wheels are compatible with a 12 x 100 front axle and a 12 x 142 rear axle

Evo Compound – High-tech formulation that provides excellent grip and low rolling resistance at the same time

A dependable and low-maintenance Shimano Nexus 7-speed internal drive train

Sram X4 Rear Derailleur Hybrid Bikes The rims offer great stabilitySHIFTING PERFORMANCE Leveraging the legendary history of SRAM shifting, the X4 rear derailleur provides great shifting performance. SPECIFICATIONS Speed (RD): 9 8 7s Cable pull ratio: 1: 1 Cage (RD): Long Max tooth: 34 Pulley bearings material: Steel Cage material (RD): Aluminium