Shimano 105 FC-R7100 Crankset Chainring Combination:52/36 triathlon and aero road bikes

triathlon and aero road bikes are designed so that the rider and bike (as an integrated system) present the smallest frontal area possible

Cassette Cogs: 12-13-14-15-16-17-19-22-25-28

new optical lens with excellent side visibility

Clutch mechanism can be turned on to maintain chain tension

Get ready to step into your next epic adventure

Shimano 105 FC-R7100 Crankset Chainring Combination:52/36 triathlon and aero road bikesOUTER 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 SERIES 105 INNER RING MATERIAL Aluminum GENERATION 105 R7100,R7100 INNER RING FINISH Anodized CRANK ARM LENGTH 160,165,170,172. 5,175 CHAIN RING COMBINATION 50 34,52 36 OUTER RING FINISH Anodized CRANK ARM MATERIAL Aluminum