4iiii Precision Ultegra 6800 Power Meter
- Trustpilot review 9.4 out of 51.564 reviews
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| Application | Road | Road | Road |
| Measurement | Single-sided | Single-sided | Single-sided |
| Measuring Position | Crank | Crank | Crank |
| Power Source | Battery | Rechargeable battery | Rechargeable battery |
| Cadence | Yes | Yes | Yes |
| Compatible with | Shimano | Shimano | |
| From 268.35 | 279.20 | 297.00 | |
| This product | View product | View product |
Customer photos
Customer photosReviews
ReviewsPros
- Price (4)
- Ease of use (2)
- Easy set up (2)
- Accurate (2)
Cons
- None (3)
- Slightly less accurate than dual sided meters (1)
- Can take a few mins for Garmin to find it each rid (1)
- Not compatible with all bikes. (1)
Most recent reviews
10 / 10
Best price on the market
By far the cheapest price for the power meter I could find, persuaded me to fit in to the second bike! Power meter is spot on, Easy to fit, and connects and calibrates in seconds. Now to put it too good use for winter training!
Pros
- Cheap
- Easy set up
Cons
- None
10 / 10
Great item
Great piece of kit easy to install and set up. Works perfectly and a great price to boot. Thanks Mantel
9 / 10
Great value & accurate enough for most
Having previously trained off heart rate I decided to take the leap to incorporate power into my training and wanted something lightweight and cost-effective (opting to spend more of my budget on aerodynamics and training). Single sided crank arm power meters are generally the cheapest, lightest and easiest to install; and 4iiii are the cheapest - but just as good - of the main manufacturers of these (Pioneer and Stages are the alternatives). Since my bike has Ultegra R8000 I was going to simply buy an R8000 left crank power meter. However, after a bit of research I discovered that the R6800 left crank is almost identical to the R8000: the finish is almost identical; they weigh the same but the two clamp screws have been swapped around (just to be ‘different’ as far as I can tell). So in performance terms there is nothing between them. This made the purchase even better value. (A 105 left crank would also fit - saving even more pennies. I didn’t fancy mixing my Ultegra groupset with 105 - but worth considering.) All in all I’m extremely happy with this product - and the price and delivery on Mantel was good too
Pros
- Great value compared to other Power Meters
- Very easy to install & setup
- Extremely lightweight
Cons
- Slightly less accurate than dual sided meters
10 / 10
Excellent customer service, fast delivery, great price.
Easy to use website, fast and efficient service, great product that was packaged extremely well and delivered in perfect condition very quickly. The 4iii is a great power crank, well constructed, easy set up, and comes with a spare battery. Done several rides now with it and my training is transformed. Setting strava PRs every ride now. Fantastic product.
Pros
- Well made
- Easy to fit and set up
- Good price
Cons
- None
10 / 10
Power at an affordable price.
Absolute bargain at this price. Pretty much tracks my power from my turbo perfectly. More than happy with this purchase. Will always consider Mantel for purchases in the future.
Pros
- Power
- Price
- Quick delivery
- Ease of use
Cons
- None
All specifications
All specifications| Application | Road |
|---|---|
| Measurement | Single-sided |
| Measuring Position | Crank |
| Power Source | Battery |
| Cadence | Yes |
| Compatible with | Shimano |
| Type of axle | 24 mm (Hollowtech II) |
| Compatibility | ANT+ / Bluetooth |
| Colour | Grey |
Manufacturer specifications
• Weight: 9 grams
• Precision of measurement: +/- 1% deviation
• Battery lifespan: more than 100 hours of riding with one CR2032 button cell battery