Quarq SRAM Riken AL Powermeter (Rings & BB not Included)

• A direct force power meter that measures total power output from both legs with +/-1.5% accuracy.
• Works for every discipline: Road, triathlon, time trial and cyclo-cross
• No compromises on materials, shifting, wheels or pedal choice.
• Proven by pro teams and athletes throughout the world -  Cobbled Classics, Giro d'™Italia, Tour de France, Vuelta a Espana, World Championships.
• Number 1 at the Ironman World Championship for the last three years.
• Uses forged aluminum crank arms.
• 10K - programmed with over 10,000 data points to eliminate temperature effects on power measurement.
• AxCad – A multi-axis accelerometer switches the power meter on and measures cadence, simplifying installation and operation.
• Breakthrough Materials -  Exogram hollow carbon fiber crank arms - the lightest, strongest crank arms we make - minimize weight and maximize speed. [ELSA RS, ELSA R and SRAM RED]
• Easy to use (and reuse) – LED indicator and visible ANT+ ID. The replaceable CR2032 battery never leaves you without power. Manual and automatic zeroing make it truly set and forget.
• Built to Last -  IPX7 waterproof rating, 2-year warranty, free firmware updates and acclaimed international support. Moves with you from bike to bike.
• With Quarq's free Qalvin app - available for Windows, Mac, iOS and Android - you can set the zero offset, check battery voltage, run diagnostics and perform firmware updates. For free.

Occasionally, without notice, manufacturers change product design and/or specifications.