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SRM Shimano XTR MTB Power Meter

Josh Matthew May 10, 2023


The ultimate power meter for your Shimano XTR crankset!

Power meter spider only. Crank arms and chainring sold separately

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SRM Shimano XTR MTB Power Meter

If you are looking for the ultimate power meter for your Shimano MTB crankset, look no further! The SRM Shimano XTR MTB Power Meter brings SRM’s world–renowned power measurement technology to your Shimano crank. Completely sealed from the elements, the SRM MTB 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.




  • PM9 – This is SRM’s newest version of their power meter which offers additional features and functionality including:
    • Magnet-less cadence
    • Left/Right Power Balance
    • Automatic temperature compensation
    • Bluetooth SMART
  • PM7 – Standard power meter spider version. You save $300 with this version.

SRM PC8 Bundle:

  • SRM PC8 Bundle: You get $249 off the standard price of the PC8 when you bundle it with a SRM power meter.


  • Please note – 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: The SRM Power Meter for Shimano is compatible with Shimano XTR M9100/M9120/M9130 cranks. It is also compatible with all other Shimano x100/x120/x130 series MTB cranksets. This includes the XT M8100/M8120/M8130 or the SLX M7100/7120/7130. It is not compatible with x000 series cranks such as the XTR M9000, XT M8000 or SLX M7000.

Bottom Bracket: This power meter uses a 24 mm Shimano MTB spindle and must be used with a 24 mm Shimano bottom bracket.

Tip - If you already have a Shimano MTB crankset on your bike, then this power meter will fit your bottom bracket perfectly as all Shimano cranksets use a 24 mm spindle.

SRM Shimano XTR MTB Specs

NameSRM Shimano XTR 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
Chainline Spacing55 mm
Crank Arm MaterialAluminum
Communication ProtocolPM7 - ANT+ | PM9 - ANT+, Bluetooth
Claimed Accuracy+/- 1.0%
Active Temperature CompensationYes
Weight582 grams (complete crankset)
Battery TypeRechargeable
Battery Life100 hours
Method of Cadence MeasurementAccelerometer
BCD104 mm 4-bolt
Spindle Size24 mm
Q Factor162 mm, 168 mm
Warranty2 years

In the Box

  • SRM Power Meter
  • 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)
  • Crank arms sold separately
  • 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.

For Shimano XTR 9100

  • 8 mm Allen key
  • Shimano Direct Mount Lock Ring Tool

For Shimano XT 8100/Shimano SLX 7100

  • 5 mm Allen key
  • Shimano Direct Mount Lock Ring Tool
  • Shimano Crank Arm Cap Tool

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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