SRM PowerMeter SRAM S975 Compact

The PowerMeter used by Lance Armstrong and Team RadioShack is now available to consumers. Pair your SRM wireless PowerMeter with SRAM’s professional-grade unidirectional carbon crankarms for a lightweight and efficient setup that works perfectly with SRAM component groups.

The PowerMeter is available in two different versions: Compact for the SRAM S 975 GXP bottom bracket and for SRAM S 975 BB30 bottom bracket.

Crank: SRAM S975 GXP or SRAM S975 BB30
Cranks are available in lengths of 170, 172.5, 175 and 177.5mm

Chain Rings:
Bolt Circle Diameter (BCD) 110 mm
Standard: 34/50

Bottom Bracket: SRAM GXP Team (116 g) or SRAM BB30 (64 g) are not included in the scope of the delivery.

Weight:
SRAM S975 GXP compact 922 g with PowerMeter, cranks, chain rings and bottom bracket (116 g)
SRAM S975 BB30 compact 868 g with PowerMeter, cranks, chain rings and bottom bracket (64 g)

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: 145 mm (incl. 1.6 mm pedal washers)

Compatible wireless with PowerControl 7 and PowerControl VI.