The Shimano 105 FC-R7100 12-speed crankset offers an optimized balance between lightweight and efficiency without sacrificing stiffness. The crank is formed with hollow aluminum technology and finished with a durable gloss black anodized. The resin ribs on the back of the chainrings are Shimano 105's unique structural design that achieves both through weight reduction and crisp shifting performance.Optimal balance of stiffness strength weight and rotational performance HOLLOWGLIDE structure cuts weight yet maintains strength for better power transfer and quicker more precise front shifting Hollow anodized aluminum arms for lightweight rigidity and durability 44.5mm chainline 148mm Q-factor Compatible with HG 12-speed chain
| Color | Black |
| Rings | 50/34, 52/36 |
| Number of Chainrings | Double |
| Crank Length (mm) | 160, 165, 170, 172.5, 175 |
| Crank Intended Use | Road |
| Drivetrain Speeds | 12 |
| Weight | 754 |
| BB Included | No |
| Pedal Spindle | 9/16" |
| Spindle Interface Type | Shimano Hollowtech II |
| Chainring BCD | 110 Shimano Asymmetric |
| Chainline/Hub Compatibility | 135/142 Road Disc Hubs > 415 mm Chainstay |
| Defined Color | Black |
| keyword search | 105 |
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