4iiii PRECISION 3+ Shimano XTR M9100 Power Meter
The 4iiii PRECISION 3+ Shimano XTR M9100 Power Meter is brings power to your M9100 or M9120 crankset. The 4iiii PRECISION power meter is a left-only crank arm-based power meter and replaces your current left side crank arm. It takes the power that is generated by your left leg and doubles it in order to determine your total power output.
Using 3D power meter technology capable of measuring tri-axial strain, the 4iiii XTR M9100 Power Meter is accurate to +/- 1.0%. In addition, it’s very lightweight, adding only 9 grams of weight to your crankset.
It features 800 hours of battery life and is compatible with both ANT+ and Bluetooth SMART devices. This means it’s compatible with your favorite bike computer, smart phone or tablet.
Key Product Details
Compatibility:
This power meter is compatible with XTR M9100/9120/9130 cranksets. It is also compatible with all other Shimano x100/x120/x130 series MTB cranksets such as the XT M8100/M8120/M8130 or the SLX M7100/7120/7130.
Power Measurement:
This 4iiii power meter measures left leg power and doubles the value to account for both legs (assumes both legs are generating the same force).
New 4iiii XTR M9100 PRECISION 3+!
The all new 4iiii XTR M9100 PRECISION 3+ power meter features the following improvements over the version 2:
- Apple Find My which allows you to always know where your bike is!
- 800 hours of battery life – the longest coin cell battery life in a power meter on the market!
- Sleeker, slimmer profile making most incompatibility issues a thing of the past.
- Stronger antenna for even better connectivity.
- Indicator light for battery life, successful zero-offset and when the unit has been turned on.
Key Features:
Affordable, accurate to within +/- 1.0%, lightweight at only 9 grams of added weight, 800 hours of battery life , CR2032 user-replaceable battery, ANT+ and Bluetooth compatible, easy to install, 3-year warranty.
Advice From Our Staff:
4iiii left side crank arms are some of our best-selling units. They are affordable and easy to install. The one consideration is they only measure left leg power compared to some other power meters that measure power from both legs (those versions usually cost more however).
Compatibility
Crankset: The 4iiii power meter is compatible with XTR M9100/9120/9130 cranksets. It is also compatible with all other Shimano x100/x120/x130 series MTB cranksets such as the XT M8100/M8120/M8130 or the SLX M7100/7120/7130.
It is not compatible with x000 series cranks such as the XTR M9000, XT M8000 or SLX M7000.
Check Frame Clearance: Crank-arm based power meters attach a sensor on the inside of the left crank arm. On some bikes, there is not enough room between the left crank arm and the chainstay for the sensor to clear the frame. Therefore, you should make sure you have at least 8 mm of clearance for the PRECISION 3+. Also, make sure that you don't have a bottom bracket mounted rear brake (used on some aero and TT bikes). The important area to measure is right in the middle of the crank arm.
In the Box
- 4iiii PRECISION 3+ Power Meter
- CR2032 coin cell battery
Specs
Name 4iiii PRECISION 3+ XTR M9100 Bike Type MTB Location of Power Measurement Crank Arm Left or Both Legs Measured Left only Independent Left/Right Measurement No Installation Easier Crank Arm Material Aluminum Communication Protocol ANT+ and Bluetooth SMART Claimed Accuracy +/- 1.0% Automatic Temp. Compensation Yes Weight 210 grams (170mm) Battery Type CR2032 coin cell Battery Life 800 hours Method of Cadence Measurement Accelerometer Warranty 3 years
| Name | 4iiii PRECISION 3+ XTR M9100 |
| Bike Type | MTB |
| Location of Power Measurement | Crank Arm |
| Left or Both Legs Measured | Left only |
| Independent Left/Right Measurement | No |
| Installation | Easier |
| Crank Arm Material | Aluminum |
| Communication Protocol | ANT+ and Bluetooth SMART |
| Claimed Accuracy | +/- 1.0% |
| Automatic Temp. Compensation | Yes |
| Weight | 210 grams (170mm) |
| Battery Type | CR2032 coin cell |
| Battery Life | 800 hours |
| Method of Cadence Measurement | Accelerometer |
| Warranty | 3 years |
Why Buy from Power Meter City
1. We ship fast! All orders ship on the same day your order is placed!
2. Free shipping on all orders in the U.S.
3. We are an authorized 4iiii dealer and this product comes with a full warranty.
4. Expert advice and customer service in case you need any help.
5. We offer a free, 30-day return policy on new items.
About our Company
At Power Meter City, we focus on power meters and related accessories and components. Our focus on these products means we can offer you the best possible selection, advice and service.
We have been in business since 2016 and are based in southern California. We are an authorized dealer of every product we sell.