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4iiii PRECISION 3+ Dual-Sided Factory Install
August 5, 2025$549.99
Convert your current crankset into a dual-sided 4iiii power meter
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4iiii PRECISION 3+ Dual-Sided Factory Install
The 4iiii PRECISION Dual-Sided Factory Install option allows you to convert your current crankset into a dual-sided 4iiii power meter. Offered in the PRECISION 3+ version, this factory install option is available for a variety of existing cranksets.
Here’s How it Works:
- After purchasing this product on our site, you will receive a prepaid shipping label along with some simply instructions in order to get your cranket sent into 4iiii
- Once 4iiii receives your crank, using the same state-of-the-art manufacturing process they use for its ride-ready units, they will install a new power meter sensor on your crankset
- When complete, your new power meter crankset will be shipped directly back to you
IMPORTANT
Please confirm your crank arm/bike has clearance for a crank arm power meter by checking your frame clearance. All sales are final. U.S. and Canada shipping addresses only.
4iiii PRECISION Dual-Sided Factory Install Specs
| Name | 4iiii Dual-Sided Power Meter | |
| Bike Type | Road | |
| 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 | 20 grams (added weight per sensor) | |
| Battery Type | CR2032 | |
| Battery Life | 550 hours | |
| Method of Cadence Measurement | Accelerometer | |
| Warranty | 3 years |
In the Box Once Completed
- 4iiii Power Meter
- 2 2032 coin cell batteries
Q&A
Have a question about this? Ask the staff.
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ron (verified owner) –
First off, Power Meter City is awesome! They went out of their way to make sure the power meter would fit my bike and to make sure I was taken care of after my power meter was delivered.
And then I was hesitant to buy a dual-sided power meter for my Shimano 9100 cranks, based on negative reviews about those cranks on various web sites. A simple phone call to the 4iiii engineers about those issues and I was able to conclude that 4iiii has its act together. A truly accurate, reliable power meter at a competitive price – you can’t go wrong!
Power Meter City –
Hi Ron, Thank you for the review on you 4iiii factory install. Our very first one. We appreciate your business and are here if there is anything else we can do in the future.