* Designed for Dura-Ace® R9100 chainrings. Compatible with Ultegra® R8000 chainrings.* Must be paired with a compatible SRAM bottom bracket* BB30 versions ship with the spacers and wave washer required for BB386EVO installation.* Exogram carbon crank arms* Bluetooth low energy technology and ANT+ wireless data transfer* AxCad – no cadence magnet required* 10K Temperature Compensation* Battery – CR2032, 200-hour battery life, change without tools* Power Balance* OmniCal – swap chainrings without affecting accuracy* 2-year warranty* IPX7 waterproof rating* Accuracy – within 1.5%, measuring both legs.

Brand: Quarq

Description: Quarq, DFour91, Power Meter Crankset, Spindle: 30mm, BCD: 110, 30mm, 170mm, Black, Road

Model: DFour91

Length: 12.7

Width: 9.6

Height: 2.7

Weight lb: 2

ID.: 350726-02

Barcode: 710845805325