SRM PowerMeter Rotor 3D+

The Rotor 3D+ road crank is extremely stiff to meet the demands of sprinters but also lightweight to satisfy the needs of climbers. 8 strain gauges guarantee the familiar SRM high accuracy and reliability.
ROTOR utilizes a special manufacturing process, named the "Trinity Drilling System". It is a unique triple hollow crank arm that enables the removal of the excess aluminum in the core while still maintaining the structural strength of the crank.

Crank: Rotor 3D+ Standard
Cranks are available in lengths of between 170 - 175mm

Chain Rings: 53/39
Bolt Circle Diameters: 130mm
Standard: 39/53
All other chain ring combinations are available at an extra charge

Bottom Bracket: Rotor BB1 steel (weight: 92 g)

Weight: 839g with crank, chain rings and bottom bracket (92 g)
- with 1 spacer as used on BB Right frames: 847 g
- with 2 spacers as used on BB30 frames: 853g

Strain Gauges: 8

Cadence Range: 30-255 rpm

Wattage Range: 0-4096 Watts

Wireless Protocol: Wireless ANT+ Sport

Accuracy: +/- 2%

Battery Life: 1400 hours of use

Q-Factor: 147mm

Compatible wireless with PowerControl 7 and PowerControl VI.