FC-RS520 12 Spd. Tooth Count:50-34T The bike locks of the

The bike locks of the Bordo family offer features that have not been provided by any other design to date

precision engineered steel cogs permanently connected with high-strength stainless steel pins

Drivetrain Speeds: 9

Tire plug tool

Maximum comfort

FC-RS520 12 Spd. Tooth Count:50-34T The bike locks of theOUTER RING MATERIAL Aluminum GFRP CRANK AXLE MATERIAL Steel AVERAGE WEIGHT 754g THREADED BB SHELL WIDTH 68 70 CRANK ARM FINISH Anodized COMPATIBLE BB TYPE Outboard CRANK AXLE FINISH Plated GEAR ARMS 4 COMPATIBLE CHAIN HG 12 speed INNER RING MATERIAL Aluminum INNER RING FINISH Anodized CRANK ARM LENGTH 172. 5 CHAIN RING COMBINATION 50 34 OUTER RING FINISH Anodized CRANK ARM MATERIAL Aluminum