General and Compatibility – SRAM Technical Service FAQ

Will the eTap AXS groupset function without a front derailleur?

Yes. SRAM RED and Force eTap AXS is designed to be used in both 1x and 2x drivetrain configurations. See more

What is the max rear tire width compatibility for the wider gearing Force eTap AXS front derailleurs?

SRAM eTap AXS Wide front derailleurs with 43/30 Wide chainrings will accommodate tires up to 700x45c and 27.5"x2.1" depending on tire, rim and frame variances. See more

Do you need to use the wider gearing option front derailleur with the new Force 43/30 crankset?

Yes. The change to the wider axle of the crankset changes the chainline of this crankset by 2.5mm. The 43/30 crankset requires the use of the 43/30 front derailleur, as it works with this specific ... See more

What is the max rear tire width compatibility for SRAM RED or Force eTap AXS front derailleurs?

42mm (measured width) for 700c tires. Bikes with tires wider than this (on 700c wheels) should be built using the 1x drivetrain option. See more