Shimano 105 Crank Arm Set R7000

The Shimano 105 Crank Arm Set R7000 is the drivetrain foundation for serious road cyclists who want Shimano's proven engineering without stepping into Ultegra or Dura-Ace territory. Sitting at the top of Shimano's entry-level performance tier, the R7000 generation brought the 105 group closer than ever to its more expensive siblings in both design and function. It's the crankset you'll find on competitive club riders, dedicated gran fondo participants, and anyone building a capable road bike meant to cover serious miles.

Shimano designed the R7000 crank arms using a Hollowtech II construction — a hollow forging process that removes material from inside the arm without sacrificing rigidity where it counts during hard pedaling efforts. The four-arm spider carries a direct-mount chainring interface, and the asymmetric arm profile is shaped to clear wide-range tire clearances common on modern endurance geometry frames. Shifting performance across the 11-speed drivetrain is a direct beneficiary of this design, with the ramp and pin geometry on the chainrings working in concert with Shimano's 11-speed chain for reliable, predictable front shifts under load.

Shimano 105 Crank Arm Set R7000 Specs at a Glance

• Drivetrain compatibility: Shimano 11-speed road
• Construction: Hollowtech II hollow-forged aluminum
• Chainring configuration: 2x (double)
• Available crank arm lengths: 160mm, 165mm, 170mm, 172.5mm, 175mm
• Finish: Black
• Bottom bracket interface: Shimano external bearing (BB not included)
• Chainrings sold separately

Design Benefits

1. Hollowtech II arm structure — The hollow-forged construction keeps weight in check while maintaining the lateral stiffness needed for efficient power transfer on climbs and sprints. It's the same fundamental technology Shimano applies across its professional-level groupsets, filtered down into the 105 range.
2. Wide crank length selection — With five arm lengths spanning 160mm through 175mm, the R7000 accommodates a broad range of riders and fit preferences. Shorter lengths suit smaller frames and riders with hip mobility considerations, while the longer options serve taller riders seeking additional leverage on flat terrain or in time trial positions.
3. 11-speed chainring compatibility — The direct-mount spider and standard 110mm BCD chainring interface work with the full range of Shimano 105 and compatible 11-speed chainrings, giving you flexibility when configuring your gearing or swapping rings down the line without replacing the entire crankset.