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SRM PM9 Origin Road Carbon Power Meter

Josh Matthew March 21, 2023
5.00 out of 5 based on 1 customer rating
(1 customer review)


The NEW SRM Road Origin! Accurate, light, stiff and compatible with almost any bike!

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SRM PM9 Origin Road Carbon Power Meter

SRM has taken power measurement to the next level with its SRM PM9 Origin Road Carbon Power Meter. Like all SRM power meters, the Origin features SRM’s 144 point calibration protocol, resulting in unmatched accuracy and consistency. The PM9 version also features Left/Right Power Balance, Magnet-less cadence, Automatic temperature compensation, and Bluetooth SMART, among other new features. The Origin also offers near limitless compatibility with exchangeable spindle sizes, crank arms, and chainrings – to fit any bike or ride preference.


Key Product Details


This power meter is compatible with 110 BCD 4-bolt chainrings. It fits 24 MM, 30 MM or 28.9 MM DUB bottom brackets, depending on the version ordered. See Compatibility tab for more information.

Power Measurement:

This SRM power meter measures power at the spider and is therefore able to measure power from both legs.

Key Features:

Dual-leg power measurement, accurate to within +/- 1.0%, lightweight, rechargeable battery, 100 hours of battery life, left/right power balance, automatic temperature compensation, ANT+ and Bluetooth compatible, 3-year warranty. See Specs tab for more information.

Advice From Our Staff:

It’s not cheap, but this is one of our nicest power meters. It is highly accurate, stiff, lightweight, look amazing and come with a solid 3-year warranty. You can mount a wide range of both 2x and 1x chainrings to it, from Shimano to Carbon-Ti to ROTOR and more. In addition, with an option to order it with a 24 mm, 30 mm or DUB spindle, you can put it on almost any bike.


Options For This Power Meter

Crank Arm:

  • LOOK-SRM Carbon (170/172.5/175) – These are the lightest crank arms offered (260 grams). The crank arm functions in three lengths, 170 mm, 172.5 mm and 175 mm, simply by rotating the Trilobe pedal inserts.
  • SRM Carbon Composite – These carbon arms are still very light and stiff, but they weigh a bit more than the LOOK-SRM Carbon at 344 grams per set. However, they are also more affordable.

LOOK-SRM Carbon (170/172.5/175)

SRM LOOK Carbon Crank Arms

SRM Carbon Composite

SRM Carbon Composite Crank Arm


  • 9200 Lid – For Shimano 9200 chainrings
  • 9100 Lid – For Shimano 9100 chainrings
  • Flat Lid – For any other 110×4 chainrings


  • 24 MM – For use with 24 mm Shimano bottom brackets.
  • 30 MM – For use with 30 mm bottom brackets.
  • 28.9 MM DUB – For use with DUB bottom brackets.

PC8 Bundle:

While not listed in the dropdown menus 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 For Your SRM 9 Road Power Meter

Here are the most commonly ordered chainrings with this power meter:


Chainrings: The SRM PM9 Origin is compatible with any 110 BCD 4-bolt asymmetric chainrings (Shimano, SRM Aluminum, Carbon-Ti, ROTOR, etc.).

Bottom Bracket: This power meter fits 24 MM, 30 MM or 28.9 MM DUB bottom brackets, depending on the version ordered. If you are ordering the same size as you currently have on your bike, you should be able to re-use your existing bottom bracket. However, if you are chaining spindle sizes, you will need to replace your bottom bracket. Please contact us with questions, we are happy to help.

SRM PM9 Origin Road Carbon Specs

NameSRM PM9 Origin Road Carbon
Bike TypeRoad
Location of Power MeasurementSpider
Left or Both Legs MeasuredBoth
Independent Left/Right MeasurementYes - Power Balance
InstallationMore involved (60 min. estimated)
Crank Arm MaterialCarbon
Communication ProtocolANT+ and Bluetooth SMART
Claimed Accuracy+/- 1.0%
Active Temperature CompensationYes
WeightVaries based on configuration
Battery TypeRechargeable
Battery Life100 hours
Method of Cadence MeasurementAccelerometer
BCD110 4-bolt asymmetric
Spindle Size24 mm or 30 mm
Q Factor145.5 mm
Warranty3 years

In the Box

  • SRM PM9 Origin Road Carbon Power Meter (spider, crank arms and spindle)
  • SRM USB Charger Cable
  • PC8 Bicycle 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.

  • 3 mm Allen key
  • 10 mm Allen key

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

1 review for SRM PM9 Origin Road Carbon Power Meter
  1. Helen (verified owner)

    PM9 is great upgrade from older generation SRM. Outstanding customer service from Power Meter City.

    • Power Meter City

      Thank you, Helen! We hope you will continue to enjoy them! Please let us know if there is anything else we can do! Ride safe!

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