Sram Red Axs Quarq, Power Meter Crankset, Speed: 12, Spindle: 28.99Mm, Bcd: Direct Mount, 50/37, Dub, 165Mm, Black, Road DELETETHIS The Prom SR is a

The Prom SR is a more mature take on our best-selling Prom backpack

Additional Lenses: No

Aluminum Frame provides a stable platform for speed

but without being overly restrictive or causing undue irritation

Sram Red Axs Quarq, Power Meter Crankset, Speed: 12, Spindle: 28.99Mm, Bcd: Direct Mount, 50/37, Dub, 165Mm, Black, Road DELETETHIS The Prom SR is a* X Range gearing technology gives you more range and a smoother gear progression, so youre always in the right gear* Power meter is fully integrated into the chainring set* Power readings are accurate within + 1. 5% and arent affected by climate conditions during a ride* Power balance measures left and right legs separately* Improved front shifting performance for crisp and accurate front shifts* Unique chainring shape results in a lighter weight,