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Stages Power L - Carbon SRAM GXP Gen3

Stages Power L - Carbon SRAM GXP Gen3
€449.00 RRP: €549.00 (18% Saved)

Prices incl. VAT plus shipping costs

In stock, delivery time 1-3 days.

Crank Length:

Version:

  • SW10813
The Stages Power L Carbon SRAM GXP power meter is a single-sided power meter for cranks of... more
Stages Power L - Carbon SRAM GXP Gen3

The Stages Power L Carbon SRAM GXP power meter is a single-sided power meter for cranks of the SRAM GXP series which is very popular with MTB and road bikes. It measures the power on the left crank arm. The Stages power meter is now available in the 3rd generation. It is positioned discretely on the inner side of the left crank arm, weighing in at a mere 15g. It's accurate (±1.5%) and easy to install. Stages L power meters always come mounted to the left crank arm. So all you have to do is find the model which is compatible with your existing crank set and simply swap the left crank arm.

The power meter comes in 2 versions: one for road cranks and one for MTB cranks. The Stages Carbon SRAM GXP power meter is not compatible with DUB or BB30 cranks.

Highlights and Downsides

  • single-sided power measurement with high accuracy (± 1.5%)
  • 200h battery life with a CR2032
  • integrated cadence measurement
  • very low weight (adds only 15g to the crank arm)
  • excellent durability
  • automatic temperature compensation
  • easy to swap between bikes
  • compatible with SRAM GXP cranks
  • works with many bike computers and smartphones (ANT+ & Bluetooth)
  • only left-sided measurement
  • compatible only with SRAM GXP cranks

Single-sided measurement

With the Stages Power L, only the left crank arm is equipped with measurement electronics. The power is doubled to estimate the total power. Staying in your training zones or pacing a long climb or a triathlon usually works very well with a single-sided power meter. It becomes more difficult when one leg is significantly stronger than the other. Then the total power deviates. The Stages Power L is therefore particularly suitable for riders who can do without the few last percent of accuracy.

Compatible bikes and cranks

The power meter is compatible with all common GXP system from SRAM. It is not compatible with DUB or BB30 cranks. The power meter is mounted on the inside of the crank arm. Therefore, 10mm space is required between the crank arm and frame. With direct-mount brakes it is often too tight. You can check with a 10mm allen wrench whether a Stages power meter fits onto your bike. In the power meter area, the 10mm allen wrench must fit between the frame and crank arm:

Stages Clearance Check

Compatible bike computers and smartphones

Thanks to ANT + and Bluetooth Smart, the Stages power meter is compatible with all ANT + enabled bike computers and smartphones with Bluetooth Smart technology. With the 3rd generation transmission strength was increased by factor 6. Even triathlon watches, which were problematic with previous versions, now work seamlessly with the Stages power meter.

Construction and design

The left-sided Stages power meter sits well protected in a flat composite housing on the inside of the left crank arm. Strain gauges detect the slightest deformation of the crank arm due to the force applied to the pedal by the rider. Acceleration sensors are used to determine the cadence. This design makes it both discreet and well protected. Since the Stages power meter is firmly connected to the left crank arm, the crank arm is always included.

Tour tested

Stages has been very involved in professional cycling in recent years. The Stages power meter were thus represented in some Tour teams. In these extreme conditions for man and gear, the Stages power meter could prove itself.

Battery

The Stages SRAM GXP power meter is powered by a standard CR2032 button cell. A battery is sufficient for about 200 hours of operation time. The CR2032 is widely used and inexpensive. It is available at almost every supermarket. The battery can be changed without tools. The LED on the power meter provides information about the battery level.

Weight

The actually power meter has a low weight of just 15g. The power meter is firmly connected to the left crank arm. The weight is therefore to be understood as additional weight to the crank arm.

Accuracy

We were able to confirm the accuracy of +-1.5% several times on our calibrated Cyclus II ergometer in the laboratory and in comparison with other power meters on the road. The measurement accuracy must be put into perspective somewhat, since the measurement is only one-sided.

Cadence

The cadence is determined by means of an accelerometer and an integrated ring laser and transmitted to the bike computer or smartphone. An additional cadence sensor is no longer necessary. Measuring cadence via acceleration sensors has long been a major challenge for engineers. In the 3rd generation of the Stages power meter, it now works perfectly.

Temperature compensation

When temperatures change, different materials expand differently. This can have a significant impact on the measurement accuracy of a power meter, as the strain gauges react to even the smallest changes. The Stages power meter therefore has active temperature compensation (ATC). This means that it delivers precise measurements even when temperatures change.

Calibration

Each individual Stages power meter is individually calibrated at the factory. Something else is the zero calibration (also called "Zero Offset" or "Manual Zero"), which should be done before every ride. This is similar to a scale that also "zeros" itself before weighing. For zero calibration, the Stages power meter must be active and connected to the bike computer or smartphone. The left crank arm must now point straight down. Now the zero calibration can be performed on the bike computer or smartphone.

Oval chainrings

The measurements of the Stages power meter are distorted by oval chainrings and are usually 4-5% higher than with round chainrings. The more oval the chainrings are, the greater the influence on the power readings.

Setup / Firmware Updates

Unlike other power meters, the Stages power meter does not need to be specially set up or registered. The correct crank length is already stored in the power meter. Firmware updates require the Stages App (Android & IOS) and a smartphone. We recommend always using the latest firmware of the power meter and the cycling computer.

Installation

The installation of the Stages power meter is very simple. The left crank arm of your crank is simply replaced by the Stages crank arm. For the installation of the Stages Carbon SRAM GXP power meter you only need a common allen wrench. It's needed to loosen or tighten the bolt that pulls the left crank onto the axle.

Durability

We have made good experiences with the durability of the Stages power meter. Due to its placement on the inside of the left crank, the power meter is well protected against mechanical influences. In a crash, for example, a pedal power meter usually gets somewhat beaten up. This is where the Stages can score. The first generation had problems with the housings. The use of an unsuitable composite led to cracks forming in the housing and water being able to get inside. However, these problems have been completely resolved with the 3rd generation. However, it still happens occasionally that water gets inside. This is usually due to an improperly closed battery cover or an improperly fitted sealing ring. When replacing the battery, please make sure that the sealing ring is correctly seated and that the battery lid is fully locked.

Warranty and support

The Stages power meter comes with a 2 year warranty. The Stages power meters are manufactured in the USA in Boulder, Colorado. However, Stages also has a base in Germany, which is responsible for sales and support in Europe. The support is very good and extremely customer friendly. If there is ever a problem, we have a direct line to Stages Europe and can help you quickly.

Specifications

Sensor Location:

left crank arm

Accuracy:

± 1.5%

Weight:

adds 15gr to left crank arm

Battery Life:

200+ hours (CR2032)

Battery Replacement:

Tool free

Wireless Technology:

ANT+, Bluetooth Smart Ready, NFC

Firmware Upgrades:

yes, wireless

Compatible Software:

Training Peaks, Strava, Garmin Training Center and others

Power Range (Watts):

0 to 2500

Cadence range (rpm):

20-220

Crank Compatibility:

SRAM GXP Road & MTB

Available lengths:

170, 172.5, 175mm

Active temperature compensation

Accelerometer based cadence measurement

In the pack

✔ Stages Carbon SRAM GXP power meter
✔ Left crank arm
✔ Battery
✔ Manual

 
Single or double sided: left side
Crank manufacturer: SRAM
Carbon or aluminum: Carbon
Road or MTB: MTB, Road
Customer reviews
4.83
von 5.00

Bewertungsdurchschnitt

Fergal K.

Great unit...

Great unit

Koen M.

very good service....

very good service.

Ante ?.

Communication is good, fa...

Communication is good, fast shipping, good product

Peter J.

This is the third Stages ...

This is the third Stages power meter I have owned. I first bought a Dura Ace versión one which I have been using for about five years without any problems. I then about two years ago I added an Ultegra Stages to my winter bike again it worked perfectly. I recently bought a bike with SRAM Red etap and added another Stages which so far has proved just as reliable as the others. A great product backed up by excellent service. I’m very happy with the way I’ve been looked after. I thoroughly recommend the PowerMeterShop .de

Peter J.

I have bought Stages Powe...

I have bought Stages Power Meters on two separate occasions from Power Meter shop and both times it has been easy and painless. They acknowledged my order immediately and kept me up to date throughout. you couldnt expect better service.

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18 Feb 2021

Great unit...

Great unit

8 Dec 2020

very good service....

very good service.

29 May 2020

Communication is good, fa...

Communication is good, fast shipping, good product

11 Jun 2018

This is the third Stages ...

This is the third Stages power meter I have owned. I first bought a Dura Ace versión one which I have been using for about five years without any problems. I then about two years ago I added an Ultegra Stages to my winter bike again it worked perfectly. I recently bought a bike with SRAM Red etap and added another Stages which so far has proved just as reliable as the others. A great product backed up by excellent service. I’m very happy with the way I’ve been looked after. I thoroughly recommend the PowerMeterShop .de

7 Jun 2018

I have bought Stages Powe...

I have bought Stages Power Meters on two separate occasions from Power Meter shop and both times it has been easy and painless. They acknowledged my order immediately and kept me up to date throughout. you couldnt expect better service.

11 May 2018

Funktioniert einwandfrei,...

Funktioniert einwandfrei, Montage kinderleicht, keine Verbindungsprobleme mit Garmin, Kalibration geht auch über Garmin einwandfrei

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