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4iiii Precision 2.0 3D Power Meter - 105 5800 - Black

USD 280.99

RRP $481.49


Save: $200.50

4.94 Stars 16 Reviews

Item limited to max quantity of 5000

( 0 item is in your basket items are in your cart )

In stock


Usually dispatched within 24 hours

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Average connection time 25 secs

Average connection time 25 secs

Thanks to the new 4iiii Precision 2.0 3D power meter, training with accurate power data doesn't have to cost the earth. Finally, anyone can train harder and ride faster for a podium topping performance.  4iiii claims that the Precision 2.0 3D unit is the lightest power meter on the market, perfect for those chasing every marginal gain. Weighing just 9-grams and fitting so neatly on the inner side of the standard Shimano 105 5800 crank arm; you'll barely notice it's there.

Inside the unit contains the patented 3D technology, which measures your power output to +/- 1% accuracy, via an axel strain gauge. Because of this high level of data accuracy, the 4iiii Precision 2.0 3D allows you to train with much more consistency and achieve the best possible results.  Powered by a replaceable 2032 coin-cell battery, the Precision 2.0 3D contains 100+ hours of riding and can easily be checked for remaining battery life via the dedicated 4iiii companion smartphone app. 3rd party training device and app integration are endless. As you can pair this power meter with almost every ANT+ or Bluetooth head-unit, trainer or training app, there's no need to worry about the compatibility of your new power meter with your current equipment set up.

  • 3D power meter technology (patent pending) measures tri-axial strain on your crank arm
  • Accurate, consistent data accurate to +/- 1%
  • Compact design
  • Weight: 9 grams
  • 100+ riding hours on 2032 coin cell battery
  • Battery status indicator via 4iiii app
  • Compatible with ANT+, Bluetooth Smart head units, smartphones, and other 4iiii products
  • User-friendly app and configurable rider compensation scale factor
  • Easy setup and maintenance


To ensure your frame has sufficient clearance for this power meter, please check this guide before purchase

Precision 2.0 3D

How long will it take to arrive?

Please check the stock availability notice on your item when placing your order. This item is: In stock.

Express Delivery Available If ordered before 8pm, delivered by courier next working day. Available on orders placed before 8pm (2pm weekends and Bank Holidays) for delivery next business day. Applies to most delivery addresses within mainland UK.

How will I know it has been sent

You will receive an email to confirm when your item has been sent.

You can also check the status of your order and individual items by accessing your account details and following the prompts.

Please allow 10 working days from the shipping date of your order before notifying us of any late deliveries.

It may be advisable to check with your neighbors to see if your delivery has been left with them, check any places it could be left such as: garage, porch, or behind garbage cans if it was too big to fit through your mailbox. Contact your local post office to see if the item has been returned to the depot as undelivered and awaiting collection.

If I'm not completely happy with my item?

Please see our returns policy.

Customer Reviews


16 Reviews

5 Stars 15
4 Stars 1
3 Stars 0
2 Stars 0
1 Stars 0
See all reviews

Top Customer Reviews

Where reviews refer to foods or cosmetic products, results may vary from person to person. Customer reviews are independent and do not represent the views of The Hut Group.

Power meter

Device delivered to Canada in just over a week. Installation a breeze. Supplied battery died in a couple of days but I suspected it would. It works as intended on my Garmin 520. Crank is lighter than my original so that's a bonus.

Power meter

Great product. My second 4iii powermeter. Works perfectly.

Works perfectly

The product arrived flawless in it's box as a 4iiii precision meter bonded nicely to a new 105 5800 crank arm. It came with a battery pre-installed and an extra battery wrapped to the packaging. Following the easy step by step instructions on the box it paired immediately with my Garmin 530 and has worked without fail. Great product!

Best "budget" pwoermeter in town

Bought one from PBK last year. No problems at all. It's reliable, stable, light, sealed properly and delivers consistent results. Battery life is also very good. I had previous experience with Stages gen. 2 and in my opinion 4iiii is superior to Stages. For the price there's no better powermeter for Shimano users. Highly recommended.


This is my second 4iiii power meter. I was in on the original kickstarter offering, and mailed them my crank arm for installation. Works great, no issues. Seems to have better battery life than my Stages. Tested the first one against my Power Tap hub, and they numbers were very close. Highly recommended.

Great value

Got it at very affordable price. Easy to install, calibrate. Did few outdoor ride and Zwift session, it work just great! Highly recommended.

4iiii precision 2.0 3D 105 power meter

Easy to install, calibrate and pair to (lezyne) head unit and Zwift via bluetooth. Works as expected. No power drops. 6 days tracked shipping to Canada. Paid tax and handling.

Great product

Everything works well, Data are precise, no drops out, Extremly fast shiping to Slovakia (2days) 100% recomended


Easy to fit easy to setup. Works very well. Data collection seems to be nice and stable to both Strava and Garmin. Great product and great service would recommend both probikekit and 4iiii power meter crank to anyone


I have no problems with 4iiii after 2 months of use. Highly recommended.

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