Stages has added new Record 12 & Super Record 12 left crank arms to their Campagnolo line-up, making them the first 12-speed road option for the power meter maker. Originally developed for the construction of Campy’s carbon cranksets a few years ago, until now Stages had been limited to the previous generation of 11-speed cranks.
Stages Power L Campagnolo 12-speed crank arms
The Stages for Campagnolo power meters are assembled on the original carbon left crank arm from the Italian drivetrain producer, making for the most seamless looking power meter option for Campy users.
With addition of Record 12 & Super Record 12, left crank arms are available for the two 12-speed gruppos, H11 disc brake groups, plus 11-speed Chorus, Record & Super Record. There is still no right arm Stages Power solution like are available exclusively for Shimano Dura-Ace R9100 & Ultegra R8000 aluminum cranksets.
According to Sam Morrison who developed the Stages Power meters for Campagnolo cranks, the shape of the hollow carbon cranks required a redesign of Stages’ setup & strain gauge placement. The result is a fairly unique design that wraps slightly around the crank arm to deliver the same easy-to-manage temperature compensation & accurate torque measurements data as the rest of Stages power meters.
Tech Details & Pricing
The Power L for Super Record 12S arm sells for the same $950 / 1000€ as the 11-speed SR adding just 15g to the carbon crank arm and promising +/-1.5% power accuracy & 200 hour battery life from their CR2032 coin cells. It features active temperature compensation, accelerometer-based cadence measurement, and both Near Field Communication (NFC) & updated Bluetooth/ANT+ power data transmission. They are available in 170mm, 172.5mm & 175mm arm lengths.
The $800 / 800€ Power L for Record 12S arms feature all of the exact same tech on the slightly lighter & more expensive Super Record-level left crank arm, yet with the a steel bottom bracket spindle & steel bearings (vs. titanium & Cult ceramic for SR, respectively). The Power L for Record 12S is also available in 170mm, 172.5mm & 175mm lengths, and claims the same 15g weight addition to the base crank arm.
Both options are available direct from Stages, although stock seems limited depending on market, with back ordered arms expected to be in stock again from mid February.