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Power Meters

SRM Science Road

SRM Science Road

The super-accurate Science version can be found in laboratories and centers for power output measurement.
The even higher measurement accuracy make it the optimum basis for those looking for last performance reserves that are required by absolute experts such as training researchers, sport doctors and other specialists.

The watertight PowerMeter design is based on the light-weight pentagonal hot-cured 7075 aluminum housing. The reinforced parts of the screw connections on the chainrings guarantee maximum stability at every crank revolution - even in the case of extreme tests of endurance such as those that can occur if endurance peaks are being measured (sprinters bring a pressure of over 2,500 watts to the pedals: extreme pressure for material that has been constructed for lightweight design!).

The SRM Wireless Science PowerMeter is only available in shimano Octalink. 

Crank: The 7075 aluminum cranks are available in lengths from 165mm to 180mm.

SRM multi-length cranks are available to order.

Chain Rings:
Bolt circle diameter: 130mm
Standard version: 39/53
Small chainring available with 38 to 46
Large chainring available with 50 to 61

Bottom Bracket: BB-5500 (weight: 251 g) - Not Included

Weight: from 1104 g with PowerMeter, cranks, chainrings and bottom bracket (251 g)

Strain Gauges: 8

Cadence Range: 30-255 rpm

Wattage Range: 0-4096 Watts

Wireless Protocol: Wireless ANT+ Sport

Accuracy: +/- 0.5%

Battery Life: 1000 hours of use

Q-Factor: 144.5mm

Compatible with PowerControl 7, PowerControl 8 and PowerControl VI and all other Ant+ head units. Andvia SRM sensor cable with PowerControl IV and V.

Crank Length