4iiii PRECISION 3+ Shimano R7000 Power MeterJosh Matthew February 22, 2024
4iiii’s PRECISION 3+ power meter combined with Shimano’s R7000 groupset
4iiii PRECISION 3+ Shimano R7000 Power Meter
If you currently have a Shimano R7000 crankset on your road bike, this 4iiii PRECISION 3+ Shimano R7000 Power Meter is for you! This 4iiii power meter replaces your current left-side crank arm. It measures the power that is generated by your left leg and doubles this value to determine your total watts.
4iiii uses patent pending 3-D tri-axial strain gauge technology in order to achieve +/- 1.0% accuracy, which places it among the most accurate power meters available. When it comes to weight, there is no equal. The 4iiii PRECISION sensor weighs a mere 9 grams – practically nothing! In addition, the power meter features dual ANT+ and Bluetooth SMART compatibility so you can use it with a wide range of devices.
In short, the 4iiii PRECISION Shimano R7000 Power Meter is one of the most accurate, lightweight and affordable direct force power meters available!
Key Product Details
This power meter is compatible with Shimano R7000 cranksets. It can also be installed on other Shimano road cranksets, as long as they use Shimano’s Hollowtech II interface. See Compatibility tab for more information.
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 R7000 PRECISION 3+!
The all new 4iiii R7000 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.
Affordable, accurate to within +/- 1.0%, lightweight at only 9 grams of added weight, 800 hours of battery life (PRECISION 3+), CR2032 user-replaceable battery, ANT+ and Bluetooth compatible, easy to install, 3-year warranty. See Specs tab for more information.
Advice From Our Staff:
4iiii left side crank arms are some of our best-selling units. They work with most Shimano cranksets, 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).
Options For This Power Meter
Crank arm lengths: 165 mm | 170 mm | 172.5 mm | 175 mm
Other Versions to Consider
Dual-Sided R7000 Crankset: We also sell the 4iiii PRECISION PRO Shimano R7000 Dual-Sided Crankset which is a complete crankset. It is more expensive, however it measures power from both legs.
Crankset: This 4iiii power meter is compatible with Shimano R7000 cranksets.
Please note, the power meter can also be installed on other Shimano road cranksets, as long as they use Shimano's Hollowtech II interface. These cranksets can easily be identified by the two opposing pinch bolts that are used to secure the left side crank arm. Please see the image below and contact us if you have any questions on compatibility.
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. Please refer to the image below.
If you find that your clearance is close but not quite sufficient, what many people will do is simply install a 1 or 2 mm bottom bracket spacer (between the left crank arm and the frame). This should provide you with the clearance you need.
4iiii PRECISION Shimano R7000 Specs
|4iiii PRECISION Shimano R7000
|Location of Power Measurement
|Left or Both Legs Measured
|Independent Left/Right Measurement
|Crank Arm Material
|ANT+ and Bluetooth SMART
|Automatic Temp. Compensation
|9 grams (sensor) | 208 grams (170 mm)
|CR2032 coin cell
|Method of Cadence Measurement
In the Box
- 4iiii PRECISION Shimano R7000 Power Meter
- CR2032 coin cell battery
Tools Needed for Installation
You will need the following tools for installation of this product. You can purchase many of these commonly used tools in our store.
- Shimano Crank Arm Cap Tool
- 5 mm Allen key
Common Questions and Answers
Question: How do I determine what length my current cranks are so I can make sure I get the same size?
- Your crank arm length should be printed or stamped on the inside of the left crank arm, usually near the pedal end.
Question: What color is the 4iiii R7000 Power Meter?
- The 4iiii Shimano 105 R7000 Power Meter is only offered in black. Please see our article for more information: What color is your 4iiii Shimano R7000 Power Meter?