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  • Stages Cycling Gen 2 Carbon Single Leg Power Meter MTB Crank Arm - GXP
  • Stages Cycling Gen 2 Carbon Single Leg Power Meter MTB Crank Arm - GXP Side
  • Stages Cycling Gen 2 Carbon Single Leg Power Meter MTB Crank Arm - GXP Back
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Stages CyclingGen 2 Carbon Single Leg Power Meter MTB Crank Arm - GXP
Sale 25% Off$472.49 $629.99

Item # SGC0008

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  • Carbon, 170mm ($472.49)
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Item # SGC0008
Description

Quantify every pedal stroke on the trail.

Seeing that power meters have exploded in popularity on the road, it was only a matter of time before mountain bikers adopted this same technology to assess their strengths and weaknesses. Catering to these data-inquisitive trail riders, the Stages Cycling Carbon Single Leg Power Meter MTB GXP Crank Arm measures and relays a host of insightful metrics as you muscle up root-laden climbs and pedal along undulating XC loops. As one of the more affordable power meters on the market, it's a great foray into translating rider output into usable data for gaining efficiency and speed—all while leaving some loot for race-day fees and upgraded components.

The power meter is neatly tucked away in a low-profile fashion along the non-drive side, preventing it from bashing its guts out on rocks and gnarled root sections. It's compatible with many of SRAM's GXP Cranks with Q-factors of 168 millimeters. Carbon construction makes it ridiculously lightweight and incredibly stiff, so you can surge forward with every pedal stroke to maximize efficiency. Best of all, the meter itself only adds a scant 20 grams to the base of the crank arm, so you'll barely even notice it's there.

Looking into the details of the meter itself, +/- 2% accuracy sits right in line with industry standards, meaning it'll please all but the most discerning of data geeks. Active Temperature compensation prevents skewed readings when conditions widely fluctuate on the trail, especially in alpine environments. For simplicity, the accelerometer-based cadence measurement doesn't require additional sensors. Bluetooth Smart and ANT+ capabilities wirelessly sync with your favorite cycling apps, so you won't have to deal with pesky cables while uploading data. For even greater analysis and control, Stages Cycling developed an app that identifies and updates firmware, zero resets the meter, provides quick read-outs of power output, and checks remaining battery life.

  • SRAM GXP-derived crank with power measuring capability
  • Compatible with SRAM GXP cranks with Q-factor of 168mm
  • Measures power with industry standard +/- 2% accuracy
  • Accelerometer-based cadence without additional sensors
  • Active Temperature compensation prevents skewed data
  • Bluetooth Smart and ANT+ wirelessly transfer data
  • Pairs with Stages app for zero resets and firmware updates
  • 200+ hour battery life with easy-swapping CR2032 battery
Tech SpecsWeight
Tech Specs
Arm Material
carbon fiber
Arm Length
170mm, 175mm
Q Factor
168mm
Compatible Components
SRAM GXP drive-side crank w/Q-factor of 168mm
Recommended Use
mountain bike
Manufacturer Warranty
1 year
Weight

Actual Weight

Actual weights are measured in-house by the Competitive Cyclist team.

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Grams

Oz

Carbon, 170mm
213g
7.51oz

Reviews & Community

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Great Power meter

  • Familiarity: I've put it through the wringer

I have been using stages for a few years now. Before they started doing Carbon MTB arms, I had the 1st Gen Sram X9. The newly redesigned sensor has been much more accurate and reliable. It is easy to sync up and calibrate before every ride. They offer and easy to use Smart Phone App to do any zero resetting or updates.

When it comes to data, it seems to be pretty accurate. In the end all power meters are going to read differently. If you use the same brand or type of power meter on all of your bikes, then you are going to have an accurate and consistent measurement to base all of your training off of. The stages arms are easy to switch between bikes if you have two bikes with the same type of crankset. The power meter only adds about 25 grams to the crankset, so not much added weight at all.