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SRM PM9 Science Track Power Meter

Josh Matthew May 24, 2024
5.00 out of 5 based on 2 customer ratings
(2 customer reviews)


The SRM Science Track Power Meter features +/- 0.5% accuracy all the way to 4,000 watts

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SRM PM9 Science Track Power Meter

The SRM PM9 Science Track Power Meter is the pinnacle of accurate and consistent power measurement for track cyclists. The Science Track Power Meter is reinforced, allowing it to measure efforts up to 4,000 watts. Due to a combination of angle and torque measurement, it can also account for the smallest changes in pedal stroke. The power meter is accurate to +0.5%, features 100 hours of battery life and has a full 2-year warranty.


Key Product Details


This power meter is compatible with 144 BCD 5-bolt track chainrings. It fits Shimano Octalink bottom brackets. 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 +/- 0.5%, rechargeable battery, 100 hours of battery life, left/right power balance, automatic temperature compensation, ANT+ and Bluetooth compatible, 2-year warranty. See Specs tab for more information.

Advice from Our Staff:

This is a popular SRM track power meter. Many track cyclists feel the spindle/chassis/arm connection on this Octalink version is more secure and produces better power transition. In addition, many of the professional German and Dutch sprinters use this SRM without fail – so we know it’s a solid power meter!



Crank Lengths:

These SRM crank arms are available in the following sizes:

  • 160 mm | 165 mm | 170 mm | 172.5 mm

PC8 Bundle:

While not listed as an option above, you can bundle your SRM 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 Science Track Power Meter is compatible with 144 BCD 5-bolt track chainrings.

Bottom Bracket: The power meter fits Shimano Octalink bottom brackets.

SRM PM9 Science Track Specs

NameSRM Science Track Power Meter
Bike TypeTrack
Location of Power MeasurementSpider
Left or Both Legs MeasuredBoth
Independent Left/Right MeasurementYes - Power Balance
InstallationMore involved (60 min. estimated)
Crank Arm MaterialAluminum
Communication ProtocolANT+ and Bluetooth SMART
Claimed Accuracy+/- 0.5%
Active Temperature CompensationYes
Weight738 grams
Battery TypeRechargeable
Battery Life100 hours
Method of Cadence MeasurementAccelerometer
BCD144 5-bolt
Spindle SizeNA
Q Factor141 mm
Warranty2 years

In the Box

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

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: 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

2 reviews for SRM PM9 Science Track Power Meter
  1. gento suzuki (verified owner)

    It was a kind response.
    Thank you for your quick shipment.

    • Power Meter City

      Hi Gento. Thanks for this kind review – we really appreciate it! Please let us know if there is anything else we can do!

  2. Keith Bruneau (verified owner)

    The SRM is exactly as expected.
    The service was greater than expected

    • Power Meter City

      Hi Keith. We’re really pleased to hear you are enjoying your SRM – a mighty fine track PM indeed! Please let us know if there is anything else that you need!

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