Spider must be paired with a compatible Quarq DZero DUB crankset with an 8-bolt interface and SRAM DUB bottom bracket
Not compatible with SRAM's 3-bolt direct mount interface
DFour DUB is designed for Dura-Ace R9100 chainrings
Bluetooth low energy technology and ANT+ wireless data transfer
MagicZero technology automatically checks and recalibrates your power meter as you ride – no need to manually calibrate
0.39 kilograms