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SRM PM9 Origin Road Carbon Power Meter

Josh Matthew November 18, 2022
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.


SRM Origin Power Meter Highlights

Dual-Leg Power Measurement

The SRM power meter measures power at the crank spider. This means it measures both left and right leg power. The PM9 also features left/right power balance, which shows power from each leg individually.

Precision Accuracy

SRM uses a 144 point calibration protocol against a known mass measured to the exact gram. With precise calibration and its Auto-Offset feature, the Origin is accurate to +/- 1.0%.

Light and Stiff

The SRM Origin offers superior stiffness to weight ratio. The entire power meter weighs close to 600 grams when ordered with the LOOK-SRM Carbon arms.

Compatibility and Convenience

By simply rotating the Trilobe pedal inserts, the Origin (when purchased with the LOOK-SRM crank arms) offers three crank arm lengths: 170, 172.5 and 175 mm.


Crank Arm: LOOK-SRM Carbon | SRM Carbon Composite

  • 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

Chainrings: If you would like to purchase this power meter without chainrings, select one of the following options in the dropdown menu above:

  • None – Shimano DURA-ACE 9100 Lid. If you wish to use your own Shimano DA 9100 chainrings.
  • None – Shimano DURA-ACE 9200 Lid. If you wish to use your own Shimano DA 9200 chainrings.
  • None – Flat Lid. If you wish to use your own 110×4 asymmetric chainrings (non-Shimano chainrings).

If you would like to purchase the power meter with chainrings, available chainrings are:

  • SRM Aluminum Chainrings (50/34 | 52/36 | 53/39) – These are great chainrings at an affordable price.
  • Carbon-Ti (50/34 | 52/36 | 54/40) – Full carbon chainrings, when only the finest will do!

Note – we also have SRM Origin Aluminum Campagnolo Chainrings available.

Spindle: 24 MM | 30 MM

  • 24 MM – For use with 24 mm Shimano bottom brackets.
  • 30 MM – For use with 30 mm 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: The SRM PM9 Origin is compatible with any 110 BCD 4-bolt asymmetric chainrings (Shimano, SRM Aluminum, Carbon-Ti, ROTOR, etc.). We offer this power meter with SRM Aluminum or Carbon-Ti rings, however you may also use your own as well.

Please note, this power meter is compatible with the new Shimano Ultegra 8100 and DURA-ACE 9200 chainrings.

Bottom Bracket: This power meter fits 24 MM or 30 MM 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, chainring if purchased, crank arms, 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
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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