SRM SRAM MTB Power MeterJuly 13, 2023
$999.00 – $1,374.00
Pro-level power meter for your SRAM 3-bolt MTB crankset!
SRM SRAM MTB Power Meter
The SRM SRAM MTB Power Meter is a great way to add power to your SRAM MTB crankset. This spider-based power meter measures power from both legs, is accurate and reliable. In addition, the upgraded PM9 version features improved accuracy, power balance, automatic temperature compensation and Bluetooth SMART.
This power meter is compatible with 3-bolt cranks and fits both boost (52 mm chainline) and standard (49 mm chainline) frames. It’s compatible with 104 BCD round and oval chainrings.
Key Product Details
This SRM fits SRAM direct mount 3-bolt cranksets. Regarding chainrings, it requires a 104 BCD 4-bolt MTB chainring (which is different than the direct mount chainrings found on many SRAM MTB cranksets). If you don’t already have a 104 BCD 4-bolt chainring, you can order one on this page along with the power meter. See Compatibility tab for more information.
This SRM power meter measures power at the spider and is therefore able to measure power from both legs.
Dual-leg power measurement, accurate to +/- 1.0% (PM9), 100 hours of battery life, rechargeable battery, left/right power balance (PM9), ANT+ and Bluetooth compatibility (PM9). See Specs tab for more information.
Advice From Our Staff:
We really like this SRAM MTB power meter. SRAM 3-bolt MTB cranksets are very common and this is a great way to add power to them. It measures power from both legs, is accurate and reliable. Having said that, it competes with our power2max SRAM MTB power meters which are similar power meters, but a bit more affordable. If you’re an SRM fan, you’ll like this unit. Otherwise, you might give the power2max a try (also a great unit) and will save some money.
PM9 vs. PM7
This power meter is available as a PM9 or PM7 version. The PM9 is SRM’s new version and offers the following features and functionality over the PM7:
- Improved accuracy
- Magnet-less cadence
- Left/Right Power Balance
- Automatic temperature compensation
- Bluetooth SMART
While not listed as an option above, you can bundle the SRM PM9 Origin Power Meter with a SRM PC8 Bike Computer. When you do, you get $249 off the standard price of the PC8. Please contact us if you would like this option.
Crankset: The SRM SRAM XX1 MTB Power Meter fits SRAM direct mount 3-bolt cranksets. In order for this power meter to fit, you must ensure your SRAM uses this interface. Please see the image below.
Chainrings: This power meter requires a 104 BCD 4-bolt MTB chainring (which is different than the direct mount chainrings found on many SRAM MTB cranksets). If you don't already have a 4-bolt chainring, you can order one on this page along with the power meter. If you purchase a new chainring, we will bolt it on to your power meter before shipping, which will make installation that much easier when you get it.
SRM SRAM MTB Specs
|Name||SRM SRAM MTB Power Meter|
|Location of Power Measurement||Spider|
|Left or Both Legs Measured||Both|
|Independent Left/Right Measurement||PM9 - Power Balance | PM7 - No|
|Installation||More involved (60 min. estimated)|
|Speeds||11- or 12-speed|
|Chainline Spacing||Boost or Standard|
|Communication Protocol||PM9 - ANT+, Bluetooth | PM7 - ANT+|
|Claimed Accuracy||PM9 - +/- 1.0% | PM7 - +/- 2.0%|
|Active Temperature Compensation||PM9 - Yes | PM7 - No|
|Battery Life||100 hours|
|Method of Cadence Measurement||PM9 - Accelerometer | PM7 - Magnet|
|BCD||104 mm 4-bolt|
|Q Factor||145.5 mm|
In the Box
- SRM Power Meter
- Chainring if purchased
- SRM USB Charger Cable
- Cadence Magnet Kit (if PM7 version. Not needed with PM9)
- SRM PC8 Cycling Computer (if purchased)
- Handlebar mount (if SRM PC8 is purchased)
Tools Needed for Installation
You will need the following tools for installation of this product. You can purchase many of these commonly used tools in our store.
- 8 mm Allen key
- T25 Torx bit
Common Questions and Answers
Question: Can my SRM PM9 power meter store ride data?
- Yes! The SRM PM9 Power Meter is capable of having rides, torque data, heart rate and core body temperature stored on the circuit board and downloaded to a .fit file. For more information please see our FAQ: Can my SRM PM9 power meter store ride data?
Question: What's the difference between this power meter and the power2max SRAM MTB?
- Both SRM and power2max make a similar 3-bolt power meter spider for SRAM MTB cranksets. They both offer their power meter in two different versions. Please see this article for more information: power2max SRAM vs. SRM SRAM MTB Power Meter.