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
Model: DFour91
Length: 12.7
Width: 9.6
Height: 2.7
Weight lb: 2
Part Number: 00.3018.190.170
Barcode: 710845805325