Shimano Ultegra FC-R8100-P Power Meter Crankset (172.5mm) (No Chainrings) (Black) (2 x 12 Speed) (Hollowtech II)

Shimano Ultegra FC-R8100-P Power Meter Crankset Description:

The Shimano Ultegra FC-R8100-P Power Meter Crankset brings all of the functionality and precision of the Dura-Ace power meter to a more attainable price point. The Ultegra R8100 Power Meter Crankset provides accurate measurement and a user-friendly interface to apply a scientific approach to your training. With all the same high performance you expect from the Ultegra line, it combines precision and incredible power transfer in a lightweight and reliable package.

Features:

• Up to 300 hours of ride time
• +/- 2% accuracy
• Simple zero offset calibration with transmitter switch
• Software compensates for temperature changes for an accurate reading
• Force vector data for analyzing pedal stroke efficiency

Specifications:

• Intended Discipline: Road
• Spindle Diameter: 24mm (Shimano)
• Bottom Bracket Included: No
• Pedal Spindle: 9/16″
• Chainrings Included: No
• Chainring BCD: 110mm
• Chainring Mount: 4-Bolt
• Chainline: 44.5mm
• Drive Type: 2x
• Speed Compatibility: 12 Speed
• Chainring Material: –
• Crankarm Material: Aluminum
• Color: Black
• Weight: 539g (Size: 170mm)

Check out our full selection of Shimano Ultegra 12 Speed Di2 Parts.

This product is expected to become available for purchase on Friday, October 9, 2026