Sram SRM Professional power meters utilize SRM's proven technology, which uses eight strain gauges to measure power output within +/- 2% accuracy. This enables cyclists to scientifically manage the specifics of their personal program, avoid overtraining, and assess and interpret reactions to a variety of training and racing stimuli.
The Sram SRM Professional measures power, cadence, temperature, heart rate, energy consumption, speed, ride time, ride distance, unlimited intervals, and times in any training zone.
 |
 2009 Specialized Tarmac Pro 52cm W SRM POWERMETER US $4,300.00 |
 Cervelo R3 with SRM Powermeter US $2,000.00 |
 NEW SRM Road Mountain Bike Powermeter Power Speed Cable US $49.99 |
 SRM Bottom Bracket Mounted Speed Sensor BB Powermeter US $64.99 |
 NEW iAero Wireless Gen III PowerMeter iBike Power SRM US $714.22 |
|
 SRM FSA K Force SRM 1725 Power Meter Wired US $999.00 |
 SRM Powercontrol PCVI wireless PC6 power meter computer US $425.00 |
 FSA Carbon SRM Power Meter Crankset PC V 170mm 39 53 US $1,500.00 |
 SRM Shimano Dura Ace 7800 WIred Power Meter PC V US $500.00 |
Crankset weighs just 750 grams.