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Rotor's dual-sided 2INpower meter on sale from April

published 3 March 2016

Four extra strain gauges, Bluetooth Smart and a rechargeable battery

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There are eight strain gauges in total, four in the crank axle to measure power from the left leg, and four in the right crank arm to measure the right leg(Image credit: Rotor)

The 2INpower eschews AA batteries for a built-in rechargeable battery, and includes Bluetooth Smart compatibility(Image credit: Rotor)

Rotor's new 2INpower will cost roughly double the asking price for its left-only predecessor, and goes on sale next month(Image credit: Rotor)

Mark Renshaw's Cervélo S5, sporting the 2INpower cranks at the Tour Down Under(Image credit: David Rome / Immediate Media)

More details will be revealed by Rotor in March – watch this space(Image credit: David Rome / Immediate Media)

This article originally appeared on BikeRadar

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Rotor has confirmed more details on its dual-sided 2INpower meter, starting with a release date of April 2016.

The new power meter gets eight strain gauges – four more than the existing left-side-only INpower – to accurately measure pedalling performance from both legs, including balance and power output.

It'll cost you though: the new 2INpower meter will go on sale for €1,499 / £1,200 (US and Australian pricing TBC), roughly double the price of the existing INpower model, which hit the shelves a year ago. We originally spotted the 2INpower meter at the Tour Down Under back in January.

"A person with a 50/50 balance in his or her power output is extremely rare, if even that person exists," said Irene Albacete, lead engineer for 2INpower. "We knew that the next step was to take advantage of INpower's technology and accuracy to develop a dual-sided power meter with the same features as INpower but which could provide power data equally in the right leg as in the left."

There are four strain gauges in the crank axle, to measure pedalling performance from the left leg, and four in the right crank arm to measure the right leg. The new Rotor 2INpower meter also gets Bluetooth Smart functionality (in addition to the ANT+ introduced on the INpower model), and a built-in rechargeable battery – we're waiting for confirmation on how long the battery lasts.

It measures power, cadence, balance, torque effectiveness and pedal smoothness for each leg. The 2INpower meter comes in crank arm lengths of 165mm, 170mm, 172.5 and 175mm. It weighs a claimed 645g in the 172.5mm version, with the crank arm made from alloy. The Q-Factor (distance between the pedal attachment points) is 148mm.