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SRM PM9 SRAM XX1 MTB Power Meter

Josh Matthew March 20, 2023


SRM power measurement technology combined with SRAM’s XX1 Boost MTB crankset!

Chainring sold separately

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SRM PM9 SRAM XX1 MTB Power Meter

The SRM PM9 SRAM XX1 MTB Power Meter combines world–renowned SRM power measurement technology with SRAM’s best in class XX1 crankset. Completely sealed from the elements, the 1X MTB SRM Power Meter can be used in the nastiest, muddiest conditions without fail. The power meter is accurate to 1.0%, features a rechargeable battery and is available in a 104 BCD spider design for rings ranging from 32-38T.


New PM9 Version!

PM9 – This is SRM’s newest version of their power meter which offers new features and functionality including:

  • Improved accuracy
  • Magnet-less cadence
  • Left/Right Power Balance
  • Automatic temperature compensation
  • Bluetooth SMART

PM7 – Please contact if you are interested in the PM7 version which doesn’t have the features listed above, but sells for $300 less.



Crank Arms: The SRM SRAM XX1 MTB Power Meter fits 3-bolt SRAM DUB Boost cranks. You can order this power meter with or without cranks (if you already have your own).

  • 170 mm | 175 mm | None

PC8 Bundle: 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.

Chainrings: If you also need a chainring, we have several MTB chainrings to choose from. Please make sure you select a 104 BCD 4-bolt chainring, size 32T or larger.


Crankset: This power meter works with SRAM XX1 Eagle DUB Boost 3-bolt cranksets. In order for this power meter to fit, you must ensure your SRAM uses this interface. Please see the image below.

SRAM 3-bolt Interface on MTB crankset


Chainrings: This power meter requires a 104 BCD 4-bolt chainring MTB chainring, size 32T or larger. If you don't already have a 4-bolt chainring, we offer several different MTB chainrings to choose from. In most cases, we recommend the Quarq SRAM X-SYNC 2 12-Speed Chainrings for best performance.


NameSRM PM9 SRAM XX1 MTB Power Meter
Bike TypeMTB
Location of Power MeasurementSpider
Left or Both Legs MeasuredBoth
Independent Left/Right MeasurementYes (Power Balance)
InstallationMore involved (60 min. estimated)
Chainring Configuration1X
Speeds11- or 12-speed
Chainline SpacingBoost
Crank Arm MaterialCarbon
Communication ProtocolANT+, Bluetooth
Claimed Accuracy+/- 1.0%
Active Temperature CompensationYes
Weight515-652 grams
Battery TypeRechargeable
Battery Life100 hours
Method of Cadence MeasurementAccelerometer
BCD104 mm 4-bolt
Spindle SizeDUB 28.9 mm
Q Factor156 mm, 168 mm
Warranty3 years

In the Box

  • SRM Power Meter (spider and crank arms if purchased)
  • SRM USB Charger Cable
  • SRM PC8 Cycling Computer (if purchased)
  • Handlebar mount (if SRM PC8 is purchased)
  • Chainring sold separately

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: How do I determine what length my current cranks are so I can make sure I get the same size?

  • Your crank arm length should be printed or stamped on the inside of the left crank arm, usually near the pedal end.

End of crank arm showing crank arm length


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