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4iiii PRECISION 3+ Shimano R7000 Power Meter

Josh Matthew September 20, 2023
5.00 out of 5 based on 33 customer ratings
(33 customer reviews)

$334.99

4iiii’s PRECISION 3+ power meter combined with Shimano’s R7000 groupset

Clear selection

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

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:

  • 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 (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.

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.Shimano Hollowtech II Left Crank Arm

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.

The clearance between the frame and left side power meter crank arm

4iiii PRECISION Shimano R7000 Specs

Name4iiii PRECISION Shimano R7000
Bike TypeRoad
Location of Power MeasurementCrank Arm
Left or Both Legs MeasuredLeft only
Independent Left/Right MeasurementNo
InstallationEasier
Crank Arm MaterialAluminum
Communication ProtocolANT+ and Bluetooth SMART
Claimed Accuracy+/- 1.0%
Automatic Temp. CompensationYes
Weight9 grams (added weight)
Battery TypeCR2032 coin cell
Battery Life800 hours
Method of Cadence MeasurementAccelerometer
Warranty3 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.

End of crank arm showing crank arm length

Question: What color is the 4iiii R7000 Power Meter?

33 reviews for 4iiii PRECISION 3+ Shimano R7000 Power Meter
  1. Robert Dole (verified owner)

    Easy to use and get feedback on my Cx bike. I’ve tried the Garmin pedal power meter as well as a Quarq. I found the pedals’ stack height as an issue, and I had multiple Quarq critical malfunctions if my pedal struck a barrier. The 4iiii seems solids and seems to be able to handle the demands of off road and Cx riding. Plus the 4iii costs a third of the pedals and crank-based power. Glad I got it.

    • Power Meter City

      Good choice, Robert! Looks like you are enjoying your new 4iiii power meter! We are here if there is anything else we can help you with.

  2. johnclowes (verified owner)

    I love this power meter! It integrates with my Garmin computer so easily. The Garmin prompts me to calibrate just before a ride, and it takes just a few seconds to ensure that the power meter gives me accurate results. In addition, the power meter also provides cadence measurement so I don’t need to worry about a separate device and no more magnet that you need to have hidden on your pedal. Overall, an excellent product and I award myself 10 wisdom points for choosing it.

    • Power Meter City

      I agree, John! This 4iiii power meter rocks! We hope you will continue to enjoy them. Please let us know if there is anything else we can help you with!

  3. 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!

  4. 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!

    Image of 4iiii power meter on a Trek bike showing chainstay clearance

    • 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!

  5. 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!

  6. 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!

  7. 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!

  8. 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!

  9. 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!

  10. 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!

  11. 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!

  12. 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!

  13. Tim Ma (verified owner)

    This is my first power meter and it works great. I had no problems with the ordering process (double check crank arm length) and it shipped faster than expected. There’s a PDF file online at this site that allows you to check crank/chain stay clearance too. Installation was very straightforward since it’s the non-drive side crank. Love finally having the data to train properly. I’ve probably put about 250 miles on it and it works flawlessly paired to both my Wahoo bolt and Garmin watch.

    • Power Meter City

      Good choice on your first power meter Tim! The 4iiii PRECISION Shimano R7000 is truly an amazing power meter! Good luck on your future rides and we are here if there is anything else we can help you with!

  14. Mark Gehring (verified owner)

    Powermeter City was great – they shipped immediately as promised and I got in a few days. Initially had some confusion as I thought a Garmin Forerunner 245 could talk to this. It will not pair, and the folks at Powermeter City confirmed that – I wish I would have asked them before I bought the watch. Also, they answered my question after only 2 hrs on a Sunday ! The watch will work if you download the CyclingDF7 or DF4 data field from Garmin IQ, but neither Garmin nor Strava will use the data. So, I bought a Garmin Edge 830, and I am very happy with everything. Not the slightest problem.

    • Power Meter City

      Hi Mark. Thank you for this! We are glad you are enjoying them. Please let us know if there is anything else we can help you with!

  15. Sam (verified owner)

    Fantastic product (4iiii power meter) and even better service!

    • Power Meter City

      Hi Sam. Thanks for this kind review. We appreciate your business and we are here if there is anything else we can do!

  16. Gangstead (verified owner)

    Very happy with the 105 left crank power meter. I see no reason to spend extra to get Ultegra/ Dura Ace left crank that is a few grams lighter. Install takes 5 minutes and another minute for pairing. Power Meter City shipped almost instantly.

    • Power Meter City

      Hi Ganstead. We are happy to you’re liking your 4iiii PRECISION Shimano R7000 Power Meter – great power meter btw! We hope you continue to enjoy them and we are here if there is anything else we can do!

  17. Anthony Franzmann (verified owner)

    Really happy with this Power Meter – easy to install and integrate with my Wahoo and Zwift. My indoor training and outdoor power readings are now the same – makes training so much more consistent and results uploaded to Training Peaks for analysis more meaningful.
    High quality components, and calibration is a breeze – less than 60 seconds – the 4iiii is smaller than the cadence meter I used to run on my left crank arm – runs both Bluetooth and ANT+ connections for convenience whether your on a smart trainer or outdoors.
    Service from Josh was prompt and Power Meter City was able to organise expedited shipping at my request.
    Impressive company and products!

    • Power Meter City

      Hi Anthony. Good job on your training! We are glab you liked your 4iiii PRECISION R7000. We hope you continue to enjoy them and please let us know if there is anything else we can help you with!

  18. Scott Sherman (verified owner)

    Purchased the R7000 for my wife as a birthday gift. She had hinted that she was interested in how much power she was producing. Although she is using a 6800 they were out of stock at the time. The R7000 works perfectly. Connected seamlessly with her Element and off she went. Very happy with this purchase.

    • Power Meter City

      Hi Scott. Sweet! We are glad your wife liked it. We hope she will continue to enjoy her Stages, we are here if there is anything else we can help you with!

  19. Max Wolffe (verified owner)

    I’m a huge fan of this power meter. Relatively inexpensive, shipped quickly, and was easy to install. I’ve done about 200 miles on it and I really enjoy having power meter data for my outdoor rides. I’d recommend this product and Power Meter City to a friend.

    • Power Meter City

      Hi Max. Thanks for this amazing review on your 4iiii PRECISION Shimano R7000. Doing great on your outdoor rides – keep it up! We hope you continue to enjoy them and we are here if there is anything else we can do!

  20. paul price (verified owner)

    Really happy with this power meter. Its on the cheaper end to get into power meters and was a breeze to install and connect to my wahoo. Power meter city had very quick turn around time from the moment I ordered to when I got it. It was like 2 business days and it was on my doorstep. That will probably be variable upon your location, but I’m glad I wasn’t waiting weeks to get it. Very happy and will be back to power meter city in the future should I ever need a new/upgrade power meter!

    • Power Meter City

      Hi Paul. Thanks for this kind review – we really appreciate it! We are glad you got it within 2 days! We hope you continue to enjoy them and please let us know if there is anything else we can do!

  21. Andy (verified owner)

    It works as advertised. Much lighter than my previous power meter (70 grams difference). Just slightly heavier than stock crank arm. Would get a rechargeable one next time just for a slimmer profile.

    • Power Meter City

      Hi Andy. Thank you for leaving a great review for your 4iiii PRECISION R7000. We hope you continue to enjoy them and please let us know if there is anything else we can do!

  22. Zachary Boivin (verified owner)

    First off, Power Meter City is awesome. I had to reach out to support prior to purchasing and they were fast and very helpful. Shipping was also very speedy. With regard to the power meter itself… I wanted to wait at least a month before reviewing to make sure I could provide the most accurate review. Removal of the old crank arm and installing the new is simple. If I can do it, you can as well. Pairing and calibrating is super easy. I have had zero connectivity issues with multiple applications. This is a solid product, priced very well, and if used properly, will make your training incredibly meaningful.

    • Power Meter City

      Hi Zachary. Thanks for this review! We hope you will enjoy those and yes – let us know in a month again. We are here if there is anything else we can do!

  23. Clive Rudd (verified owner)

    The PM arrived 2 days earlier which was a great surprise. It is working like a clock!

    • Power Meter City

      Hi Clive. Thanks for the kind review on your 4iiii R7000 Power Meter. We are here if there is anything else we can help you with!

  24. Al (verified owner)

    Factory fresh Shimano 105 Left Crank with Power Meter, very professional sensor, one for one swap, linked up immediately. I recommend this product!

    • Power Meter City

      Hi AI. Thank you for this amazing review. We are glad you like your 4iiii R7000 and we hope you continue to enjoy them and please let us know if there is anything else we can do!

  25. Bryan (verified owner)

    Great power meter for the price! Set up is super simple, calibrate it, and you’re on your way. The only other power meter I have to compare it against is the built in power meter in my wahoo Kickr, and they’re usually within a couple watts of each other. I was on the fence between stages and 4iiii, I’m really glad I got this one, very solid unit.

    • Power Meter City

      Hi Bryan. Thank you for this awesome review on your 4iiii PRECISION R7000. We are glad you liked it and we hope you continue to enjoy them. We appreciate your business and please let us know if there is anything else we can do!

  26. Gabriel (verified owner)

    Great product, works well, super easy to install.
    Very quick shipping and cx service answers quickly as well!

    • Power Meter City

      Hi Gabriel. We’re glad to hear you are enjoying your 4iiii R7000. Thank you for your business and please let us know if you need anything else.

  27. Babak Mansouri (verified owner)

    This is my first power meter and i am so happy training with one. It is as light as it can be and according to tests one of the most accurate crank arms power meters. I am glad i ordered from power meter city. I ordered it on Friday and received it on Monday with free shipping and I live on east coast I believe it was shipped from California.

    • Power Meter City

      Hi Babak, good choice on your first power meter and thank you for kind review. We hope you will continue to enjoy it and are here if there is anything else we can do.

  28. C G (verified owner)

    I am glad that I found this site. Their products and services were in tune with my needs. I needed a good, affordable power meter and good customer service. To be fair the customer service ended up being excellent. It was easy to install and it is recording data. The rest is up to me. I have marked the site for future shopping.

    • Power Meter City

      Hi CG. Thanks for the kind review – that made our day! We are here if there is anything else we can help you with.

  29. Christian Fredrickson (verified owner)

    Great product. Easy to install. Fast shipment. Now I have one on both my bikes.

    • Power Meter City

      Hi Christian. We’re glad to hear you are enjoying your 4iiii R7000. Thank you for your business and please let us know if you need anything else.

  30. Andrew O’Neill (verified owner)

    I’m very happy with this power meter the installation and setup only took a few minutes. I think this power meter works as well as the more expensive unit I have on my other bike.

    • Power Meter City

      Hi Andrew. Thanks for the review of your 4iiii R7000 power meter. It’s a great unit for the money. Keep up the good work and let us know if you need anything else!

  31. Ricky (verified owner)

    This power meter works like a charm. Installation and setup was a breeze. Have used the power meter on several rides and the results seem to be consistent with numbers from the PowerTap I use on my other bike. I use this on a bike for which I have multiple wheelsets and tire sizes. It really works great and allows me to access power data whether I am on the road or riding gravel. I highly, highly recommend this power meter.

    • Power Meter City

      Hi Ricky. Your review put a smile on our face! We’re happy to hear your 4iiii R7000 is getting the job done nicely for you. Keep up the good work!

  32. Jared (verified owner)

    4iiii provide the best bang for your buck when it comes to power meters! I’ve been using the precision left side crank arm power meter for a few weeks and the experience has been great. Powermetercity’s shipping was fast and easy and I saved ~$50 on shipping instead of going directly through the vendor.

    • Power Meter City

      Hi Jared. Thank you for your review. We really like these units and are glad you’re enjoying it. We appreciate your business and are here if you need anything else!

  33. Patrick (verified owner)

    I am amazed. This has to be the lightest and cheapest power meter in the world and yet it gives me good clean data, without any problems. It took me three minutes to order from power meter city, arrived within five days and I had fitted it within just five minutes. I am very satisfied with this purchase and recommend this to anyone looking for a power meter.

    • Power Meter City

      Hi Patrick. Thank you for leaving us a review on your 4iiii R7000. We hope you continue to enjoy it and are here if there is anything else we can do!

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