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SRM PM9 powermeter spiders add oval ring compatibility, ditch the cadence magnets

srm pm9 crank spider power meter for road and mountain bikes
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The new SRM Origin PM9 brings useful new features and compatibility to their benchmark spider-based power meter for road, gravel, and mountain bikes.

Using a new design that still works with their modular system, you can mix and match spindles, crank arms, and chainrings to fit whatever bike you’ve got, and now it’s much easier to charge and use…

srm pm9 crank spider power meter for road and mountain bikes

The biggest upgrades for the new PM9 are:

  • Magnetless cadence measurement
  • Oval chainring compatibility
  • Left/Right balance
  • Pedal Smoothness
  • Temperature Compensation

Now, there’s no need to stick a magnet on your frame for it to detect cadence. As much as we enjoy seeing some of the clever mounting solutions, this is a big user-friendliness upgrade.

A built-in temperature sensor lets it automatically correct itself in real time, and improved angle and torque measurements allow it to maintain accurate readings even with oval and other non-round chainrings.

srm pm9 crank spider power meter for road and mountain bikes

The 9th generation PM9 uses a magnetic charging port and is available as a Mountain Bike version, too, just without the same graphics and “9” mark. They have ANT+ and Bluetooth LE transmitters to work with most any modern cycling computer, and it’s own app can show more advanced pedaling dynamics data. And yes, it’s Zwift compatible.

modular crank arms and spindles for SRM PM9 power meter spiders

They offer a variety of spindles to fit different bottom bracket standards, and their crank arms come in alloy, carbon, and top-level Look carbon fiber versions to fit different budgets.

All use the same PM9 spider, which allows you to fit the product to almost any bike and rider. Not shown, there are also SRAM, Shimano, Praxis, and Campagnolo crankarm/chainring versions sold as complete kits with the new PM9 spider.

carbon ti carbon fiber chainrings for SRM PM9 powermeter spider

It uses a standard 4-bolt chainring pattern, opening it up to numerous brands and sizes, from 1x to double chainrings. They offer a set with Carbon-Ti carbon fiber chainrings if you want to really step up the bling.

Prices start at $1,549 and run to $2,439 depending on cranks and chainrings chosen.

SRM X-power mountain bike power meter pedals

The X-Power power meter mountain bike pedals are now being assembled in their Colorado-based US headquarters, too, which should improve availability and shipping times for North American customers.

closeup of magnetic charging on SRM X-power mountain bike power meter pedals

They use a magnetic charger, too, with only a single contact port for one lead…the spindle is the other contact. Available in Orange, Gold, Blue, Black, and Red. MSRP is $1,199 for a dual leg pair, and $899 for a single leg setup with a “dummy” pedal on the left side.


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