4iiii PRECISION PRO Shimano DURA-ACE 9100 Dual-Sided CranksetJosh Matthew August 21, 2019
4iiii’s left/right power measurement on Shimano’s top-end DURA-ACE 9100 crankset
4iiii PRECISION PRO Shimano DURA-ACE 9100 Dual-Sided Crankset
The 4iiii PRECISION PRO Shimano DURA-ACE 9100 Dual-Sided Crankset combines 4iiii’s patent pending 3-D tri-axial strain gauge technology with Shimano’s top-end DURA-ACE 9100 crankset. The 4iiii PRECISION DA 9100 Dual-Sided Crankset also features independent left/right power measurement. With a power sensor located on the inside of both crank arms, the power meter can measure the force generated by each leg individually.
In addition to +/- 1.0% accuracy and dual ANT+ and Bluetooth SMART compatibility, the 4iiii PRECISION is extremely lightweight, only adding approximately 40 grams to the Shimano DA 9100 crankset. The 4iiii PRECISION uses a coin cell 2032 battery with a 100-hour battery life.
4iiii 9100 Dual-Sided Crankset Options
- Chainrings: 50/34 | 52/36 | 53/39
- Crank arm lengths: 165 mm | 170 mm | 172.5 mm | 175 mm
This power meter uses a 24 mm Shimano road spindle. Therefore, it is compatible with almost any bike when used with the correct bottom bracket.
In the Box
- 4iiii Power Meter Crankset
- 2 CR2032 batteries
- Quick Start guide
|Name||4iiii PRECISION PRO 9100 Crankset|
|Location of Power Measurement||Crank arm|
|Left or Both Legs Measured||Both|
|Independent Left/Right Measurement||Yes|
|Installation||More involved (60 min. estimated)|
|Communication Protocol||ANT+ and Bluetooth SMART|
|Claimed Accuracy||+/- 1.0%|
|Weight||694 grams (170 mm, 50-34T)|
|Battery Type||2032 coin cell|
|Battery Life||100 hours|
|Method of Cadence Measurement||Accelerometer|