produce power meters
for cyclists of all levels from amateur racer to elite pro. The 4iiii Precision crank arm power meter
is the lightest on the market offering great value for money with no compromise to accuracy at less than 10g additional weight. For those seeking true bi-lateral power metering
they have the 4iiii dual sided power system
with strain gauges in both the left and right crank arms.
4iiii Power Meter Reviews