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The SRM Dura-Ace 7900 Wireless power meter only features Shimano's flagship 7900 cranks with super stiff chainrings for maximum shifting performance especially with Di2 electronic shifting. It is perfect for riders who already have a Powercontrol or other device like a Garmin 705 making the Powercontrol and related accessories not needed. Wireless data transmission from the SRM PowerMeter is done through the ANT+Sport protocol to guarantee the highest reliability and accuracy in data transmission.
The SRM Wireless power meter is the only choice in premium power meters. It has fantastic machine work and build quality. More top athletes and coaches recognize SRM power meters as the default choice where the best function and performance is required. It's design allows you to change rear wheels and has a proven reputation of holding up to a lot of hard use.
The new Wireless Dura Ace compatible SRM was also designed to accommodate frames with larger bottom bracket diameters such as the Giant, Scott, and Trek. The new wireless power meter design has a 50 mm inside diameter to work with all frames that use the integrated bottom bracket.
See our power-based training page for more information about the benefits of power-based training.