4iiii PRECISION Shimano R7000 Power Meter
March 13, 2023$284.99 – $334.99
One of the most accurate, lightweight and affordable power meters available!
4iiii PRECISION Shimano R7000 Power Meter
If you currently have a Shimano R7000 crankset on your road bike, this 4iiii PRECISION 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
Compatibility:
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.
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 R7000 PRECISION 3!
The all new 4iiii R7000 PRECISION 3 power meter features the following improvements over the version 2:
- 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 (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
- Versions: PRECISION 2 | PRECISION 3 (see above for PRECISION 3 differences)
- 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.
Compatibility
Crankset: This 4iiii power meter is compatible with Shimano R7000 cranksets.
Please note, the power meter can also be installed 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 10 mm of clearance for the PRECISION 2 and 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
| Name | 4iiii PRECISION Shimano R7000 |
| Bike Type | Road |
| 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 | 9 grams (added weight) |
| Battery Type | CR2032 coin cell |
| Battery Life | Version 2: 100 hours / Version 3: 800 hours |
| Method of Cadence Measurement | Accelerometer |
| Warranty | 3 years |
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?
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Benjamin Hughes (verified owner) –
The customer service and product knowledge at Power Meter City is outstanding. They were patient and answered all my questions and helped determine which power meter was best for my needs. The 4iiii power meter is great. Installation was super easy. It works flawless and I’m very satisfied.
Power Meter City –
Really appreciate this, Benjamin. We hope you will continue to enjoy your new 4iiii power meter. We are here if there is anything else we can help you with!
Mikey_P (verified owner) –
Totally satisfied with the performance of the 4iiii R7000 powermeter (Precision 2 model). I’ve purchased two of these units – one for a Bianchi Allroad gravel bike and another for my Trek Emonda SL5. Both powermeters pair up instantly with my Garmin Edge 130 Plus head unit. Accuracy appears to be very good; although I have no real way of verifying this. Once you train with a powermeter, you’ll wonder how you ever got along without one. Also, having a built-in cadence sensor is the icing on the cake. Thank you Power Meter City for your great pricing and service!
Power Meter City –
Thank you Mikey! We really appreciate this! We hope you will continue to enjoy your new power meter and please let us know if there is anything else we can do! Ride safe!
Terry (verified owner) –
Easy install and fast setup. Service and shipping was super fast too. Ordered and got it the next day! Thanks!
Power Meter City –
Thank you, Terry! We hope you will continue to enjoy your new power meter! Let us know if there is anything else we can do!
Bill (verified owner) –
Great experience ordering and the product arrived as expected. The power meter was easy to install and set-up with my Garmin 520. Great product!
Power Meter City –
Thank you for this kind review, Bill! Looks like you are enjoying your new 4iiii power meter – if there is anything else we can do to help, please let us know!
TimS (verified owner) –
Super easy to browse the website and to order!! This is the second time I’ve ordered from them and will do so again in the future.
I also had an issue with an address change as i was travelling and they easily took my destination address and used that so the item was waiting for me when I arrived:-)
Power Meter City –
Hi Tim, glad you finally have your new 4iiii PRECISION Shimano R7000 Power Meter. We hope you will enjoy them. Please let us know if there is anything else we can do!
Steve (verified owner) –
4iiii crank arm powermeters have been on my radar for a while and I finally decided to get one. It shipped fast, installing and setting it up with my head-unit was very simple. Super satisfied thus far, with a few hundred miles on it. Will likely be purchasing another one in the near future.
Power Meter City –
Hi Steve. Thanks for this kind review – we really appreciate it. We hope you will continue to enjoy your new power meter and please let us know if there is anything else we can do!
Frank (verified owner) –
Ordered a 4iiii power meter LH crank. Received an e-mail stating the unit shipped the same day and a tracking number. Arrived Friday afternoon. Had an install question Saturday and Josh responded within an hour. Thought I’d see nothing until Monday.
Power meter installed easily and linked to my Garmin 530 with no issues .
Great service from Power Meter City
Power Meter City –
Hi Frank. Hi Andrew. Thanks for this kind awesome – we really appreciate it. We hope you will continue to enjoy your new power meter and please let us know if there is anything else we can do!
myron (verified owner) –
Very easy to set up and use, didn’t have any drop out or crazy suspicious numbers, delivery is on time.
Power Meter City –
Hi Myron. Thanks for this kind review! Let us know if there is anything else we can do!
Dannette Trappe (verified owner) –
Great power meter. It was easy to install and is light. So far I’ve only used it for indoor training, but it seems accurate. Would recommend to a friend ????
Power Meter City –
Thanks for this kind review, Dannette. Good job on your training! We hope you will continue to enjoy your power meter! Let us know if there is anything else we can help you with!
Bob Weiss –
Just getting started with power meter. Straight forward ordering and installation process. Really good documentation online covering selection, installation, and usage. Looking forward to gets some analytics for my rides.
Power Meter City –
Hi Bob! Welcome to power! Good luck on your future rides and we hope you continue to enjoy your 4iiii R7000 power meter. Let us know if there is anything else we can help you with!