Power Meters / Powermeters (SRM, Powertap, Quarq, Ergomo, Vector, Stages, power2max, P2M, 4iii, InPower, Cinch)

One thing I didn't think about was crit racing and grinding pedals into corners and/or crashing. That's gonna get expensive, fast, with these.

Apparently the pedal bit is made by Exustar and surprisingly cheap to replace - the Garminho gubbins can be switched over.