4iiii PRECISION 3+ Ride Ready GRX FC-RX810/RX820 Power Meter Left Arm Choose:172.5mm Silicone grease SIS SP41 is

Silicone grease SIS SP41 is pre-lubricated with a special silicone grease for light-action shifting

3 uses an extra-large solvent reservoir and a series of four rotating brushes to get chains sparkling clean inside and out

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4iiii PRECISION 3+ Ride Ready GRX FC-RX810/RX820 Power Meter Left Arm Choose:172.5mm Silicone grease SIS SP41 isThe 4iiii PRECISION 3+ Ride Ready is a left arm power meter pre installed on a Shimano GRX crank arm, compatible with both the FC RX810 (11 speed) and FC RX820 (12 speed) gravel drivetrains. It delivers 1% power accuracy and includes Apple Find My support for keeping track of the unit across long days in the dirt. The meter ships in a smaller and lighter form factor than its predecessor, with an automatic terrain selector that adjusts calibration