4iiii PRECISION 3+ Ride Ready Ultegra FC-R8100 Power Meter Left Arm Choose:165mm lower rolling resistance when compared

lower rolling resistance when compared to a tube-type tire

Updated to fit current 12-speed cassettes

with lower compression modulus

Large: HEX 2/3/4/5/6/8/10mm

Because we use the finest ingredients and surfactants

4iiii PRECISION 3+ Ride Ready Ultegra FC-R8100 Power Meter Left Arm Choose:165mm lower rolling resistance when comparedThe 4iiii PRECISION 3+ Ride Ready is a left arm power meter pre installed on a Shimano Ultegra FC R8100 crank arm, ready to mount and ride without additional setup. It delivers 1% power accuracy and includes Apple Find My support, allowing riders to locate the unit if it goes missing. The meter ships in a smaller and lighter form factor than its predecessor, with an automatic terrain selector that adjusts calibration for varied riding conditions.