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4iiii launches 'world’s lightest' dual-side power meter

New dual-side power meter coming to UK this autumn

4iiii has launched the dual-sided power meter that Team Etixx - Quick Step has been using this season, and which the Canadian company claims is the lightest dual-side power meter in the world - it adds just 25g to a crankset according to the company’s claims.

The company is offering two ways to buy the power meter. You can buy a Dura-Ace 9000 crankset for $1,499 with the power meter installed or, alternatively, if you already have that crankset, you can send it off to the company to have the power meter fitted for $749. UK prices haven’t been finalised yet.


Using strain gauges on both arms, the Precision Pro can record left and right leg power independently and uses ANT+ to send the data to a compatible computer head unit. The heart of the power meter is housed inside a small plastic pod bonded to the crank arm, and also contains the coin cell battery.

- How to choose a cycling power meter — a buyer's guide to your power training options

The Precision Pro joins the first power meter released by the company, the Precision 2.0, which is very much like a Stages power meter with a single-sided power meter, with a small pod attached to the inside face of the crank arm.

The Etixx - Quick Step team have been putting the new power meter through its paces this season, including at the Tour de France, and by all accounts, they seemed pleased with the performance. 


Koen Pelgrim, Head Trainer for Etixx – Quick-Step, says: “4iiii’s Precision Pro power meter gives us valuable information about our riders’ shape and condition. It measures both legs independently, while only adding a few extra grams to the bike.” 

UK distribution is via - we'll confirm UK prices as soon as we have then, and availability is expected this autumn.

David worked on the tech team from 2012-2020. Previously he was editor of and before that staff writer at RCUK. He's a seasoned cyclist of all disciplines, from road to mountain biking, touring to cyclo-cross, he only wishes he had time to ride them all. He's mildly competitive, though he'll never admit it, and is a frequent road racer but is too lazy to do really well. He currently resides in the Cotswolds, and you can now find him over on his own YouTube channel David Arthur - Just Ride Bikes

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Gromski | 7 years ago

What happens if you need to change a chain ring?

The _Kaner | 7 years ago

...and if your budget is ultegra....look elsewhere (pauper)????

Man of Lard | 7 years ago

They might like to try and deliver the single sided ones that were due 1/July - now slipped to 1/November instead of announcing new vaporware.

pruaga replied to Man of Lard | 7 years ago
Man of Lard wrote:

They might like to try and deliver the single sided ones that were due 1/July - now slipped to 1/November instead of announcing new vaporware.


I've got a single sided Ultegra that I just bought in a shop a couple of months ago.  Didn't realise they were still not shipping them out to pre-orders. 

Mayhem SWE | 7 years ago

A factory install if you send in your own crankset is $750, but a pre-built Dura-Ace crankset is $1500? That seems awfully steep considering you can get a brand new loose crankset around €400 if you shop around. While they probably don't sell enough to qualify for Shimano volume discounts certainly they're not paying full retail for the cranksets…

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