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4iiii Precision 2.0 3D Power Meter - Ultegra 6800

GBP 263.49

RRP £469.00


Save: £205.51

4.81 Stars 16 Reviews

Item limited to max quantity of 5000

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In stock


Usually dispatched within 24 hours

Live Chat

Average connection time 25 secs

Using a power meter is one sure-fire way to train more efficiently, ride faster and achieve a podium topping performance. While previously, power meters remained the reserve of professional riders, thanks to the new 4iiii Precision 2.0 3D, training with power is more accessible than ever before.

Unlike other, bulkier units, this power meter weighs just 9 grams and fits so neatly onto the inside of a regular Ultegra 6800 crank arm; you'll barely notice that it's there. Using 3D patented technology, the 4iiii Precision 2.0 3D measures your power output to +/- 1% accuracy, via the tri-axel strain gauge. This degree of accuracy means you can train with much more consistency and ultimately, achieve much better results. With an easily replaceable 2032 coin-cell battery, this power meter offers 100+ hours of riding time and, like a rechargeable battery, can easily be checked for life using the dedicated 4iiii companion app. Thankfully, the 4iiii Precision 2.0 3D is compatible with most ANT+ and Bluetooth capable devices and apps. So, whatever computer, training device or apps you use, you won't need to worry about integration between your new power meter and your current 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

If ordered before 11pm, delivered by courier next working day.

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 My Account details and following the prompts.

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

It may be advisable to check with your neighbours to see if a parcel has been left with them, check any outhouses you might have where it may be left if it cannot fit through your letterbox and contact your local sorting 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 13
4 Stars 3
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.

4iiii ultegra 6800 175mm

Excellent price value. Delivery is fast, 3 days to Hungary. The power meter is quick to install, and works well with garmin headunits and bluetooth android applications. The item in it was only 48% in condition, I had to replace it, but they gave another in the package. Recommended category who wants to train at a good price based on performance.

Power meter

Very satisfied with Probikekit, Quick delivery, best price on the market . For the 4iii power meter shimano ultegra left arm; all I had to do is attache the crank arm to the crank and the connection to my cateye pardons SMART + was immediately ready.. I grandly recommende Probikekit for there service! Laurie


Everything works great. I am still using into it.

Simply works

Easy to install and easy to pair with the Garmin. Works straight out of the box. So far have ridden the unit 5 times and power readings were consistent without and drop in the readings.

4iiii Simply Works

Great price on a 4iiii Ultegra left crank arm power meter. Easy to install and pair with a Wahoo Bolt. Simple, quick pre-ride calibrations. Consistent readings on tarmac and gravel. Smallest and lightest sensor of all left crank arm power meters. If you want basic power data during and after your rides, this product is hard to beat.

Game Changer

This has totally changed my winter training. I can target specific training both indoors and outdoors. Easy to fit and set up.

It just works ...

I have been using a PowerPod power meter and, while it works fine, I became frustrated with it turning off when I stopped for coffee and then sometimes not being recognized by my Lezyne GPS computer so decided to try the 4iii. I ordered the Ultegra 6800 version despite having an Ultegra R8000 chainset simply because it was cheaper. Installed easily. Recognized and paired first go by my GPS computer. Power readings somewhat more stable then the Powerpod (although overall power readings appear to be similar). The 4iii turns on quickly after a coffee/lunch break (unlike the PowerPod). I might miss playing with the Isaac software that comes with the Powerpod, but overall the 4iii fits my needs better. Recommended.

2 x power meter owner

Whilst I don't own 2 cars or even one I'm happy to now have two power meters; one on my race /TT bike and one on my road bike. I've been using a Stages device which is still too expensive to replicate but this 4iiii unit is very similar and seems to give comparable readings but is much cheaper. It's on exactly the same crank model and was as easy to 'pair' as indicated to my Garmin head unit - I wasn't completely sure if there would be any conflict having 2 power meters added but it all works fine. I'm very pleased with it. The free next day delivery (Sunday) was rather good especially as the courier turned up to deliver it on a bike! - I was most impressed by that.

love it!

got this from pbk whilst on sale, bang for the buck! Love the stealth look. No more annoying rubbers from cadence sensor hanging of the crankarm, because this power meter comes with its own cadence sensor. get it while you can!

4iiii Powermeter

Works exactly as describes, mounts easily on both my bikes and provides accurate power data.

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