The Shimano 105 FC-R7100 is a 12-speed Hollowtech II road crankset in black, with 50/34T chainrings and 170mm arms.

• 2x12-speed, 50/34T compact chainrings
• 170mm crank arms
• Hollow aluminium arms with a 24mm Hollowtech II spindle
• 110mm BCD chainrings with resin ribs for stiffness
• Chainline 44.5mm, Q-factor 148mm
• Approx. 754g (170mm, 50-34T); bottom bracket sold separately