The SRM X-Power MTB isn't a pedal you stumble into — it's a deliberate purchase made by riders who want SRM-grade power data on dirt, gravel, or cyclocross without sacrificing the SPD interface they already ride. This particular set is a demo: installed and used a handful of times, returned in like-new condition, and still covered under SRM's warranty. If you've been pricing these new and watching the lead time, this is the way in without the 4-to-5-week build queue.

SRM built the X-Power around a pedal-first philosophy, which is why the stack height and Q-factor land within a millimeter of a standard SPD pedal. The electronics live entirely inside the spindle — there's no external pod, no battery cover, and no obvious visual cue that you're riding a power meter. Stack height comes in at 10.5mm with a 54mm Q-factor, which means swapping these onto a bike that's already dialed around XT or XTR doesn't require any fit changes. Cleats are standard 2-bolt SPD, so your existing shoes work without modification.

This is the dual-sided version, meaning a sensor lives in each pedal and reads true left/right power balance rather than doubling a single-leg measurement. Accuracy is rated within ±2%, and both pedals communicate over ANT+ and Bluetooth — pair them with any modern head unit or with SRM's app on your phone for firmware updates and zero-offset calibration. Battery life runs around 30 hours per charge, and the magnetic charging plug means there's no opening in the housing for water or grit to find its way in. That sealed design matters more on a mountain bike than it does on the road.... Read More