4iiii PRECISION Shimano GRX RX810 Power Meter
$334.99 – $384.994iiii's PRECISION power meter combined with Shimano’s GRX RX810 groupset
4iiii power on a Shimano GRX RX810 right side crank arm!
The first and only dual-sided Shimano’s GRX power meter crankset!
4iiii PRECISION Factory Install
$324.99Convert your current left side crank arm into a 4iiii power meter!
Convert your current right side crank arm into a 4iiii power meter!
Convert your current crankset into a dual-sided 4iiii power meter!