A 40T and a 42T. The power meter is extremely accurate. The 1x RED AXST power meter has been re-engineered for more useful gearing and better shifting across all configurations. It features Quarq's DZero power measurement technology for accurate readings that aren't affected by climate conditions during a ride.
Through a reduction in chainring size, and adding more range to the rear cassette, shifting performance is improved. Single-ring drivetrain simplifies functionality and reduces weight. Variants feature direct mount aero chainrings for better aerodynamics. Non-aero chainrings can be installed with a single tool, making gearing changes a breeze. SRAM X-SYNCT wide-tooth, narrow-tooth chainring technology provides maximum chain control.
Laser-etched chainring finish is more durable. DUBT bottom bracket adds durability, simplicity and broad compatibility.This item is in the category "Sporting Goods\Cycling\Bicycle Components & Parts\Cranksets". The seller is "biaggiox3" and is located in this country: US. This item can be shipped to United States.