Compatibility

Rival, Force, Red eTap AXS

• What 2x chainring options are compatible with the Force eTap AXS MAX 36T rear derailleur?
All SRAM AXS road chainring combinations are compatible with the MAX 36T Force AXS rear derailleur.  For more details on the compatibility of 12-speed road AXS components, see the AXS Components Co... See more
• Is there a marking or indication on the rear derailleur to know if it is a 36t-max or 33t-max version?
Yes. Going forward, all eTap AXS rear derailleurs are marked with "MAX 36T" or "MAX 33T" on the back of the derailleur near the B-bolt.   See more
• Is there a different eTap AXS rear derailleur for 2x and 1x drivetrains?
The larger XPLR rear derailleurs are specifically designed for 1x systems and have the advantage of being able to accommodate larger cassettes.For 2x systems as well as 1x systems with cassettes 10... See more
• What cassette sizes are compatible with SRAM eTap AXS rear derailleurs?
  33t max SRAM AXS rear derailleurs are compatible with 10-26t, 10-28t, 10-30t, and 10-33t cassettes.  RED eTap AXS - max 33, 36 Force eTap AXS – max 33, 36   36t max SRAM AXS rear derailleurs are ... See more
• Will the eTap AXS groupset function without a front derailleur?
Yes. SRAM AXS and eTap AXS groupsets are designed to be used in both 1x and 2x drivetrain configurations. See more
• What is the max rear tire width compatibility for eTap AXS Wide 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 Wide front derailleur with Wide 43/30 cranksets?
Yes. The change to the wider spindle of the crankset changes the chainline of this crankset by 2.5mm. The Wide 43/30 crankset requires the use of the Wide front derailleur, as it works with this sp... 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 a 1x drivetrain option. See more
• Will 11-speed SRAM RED eTap levers communicate with 12-speed SRAM RED, Force or Rival eTap AXS electronic derailleurs?
No, they will not.  11-speed SRAM eTap shifters are not compatible with 12-speed eTap AXS components. On the other hand, Force eTap AXS and RED eTap AXS D1 shifters will be compatible with 11-spee... See more
• Can I use a bike built with AXS components on my direct drive 11-speed trainer?
Direct drive trainers require XDR cassette compatibility in order to use them with a AXS bike. Use of 12-speed SRAM road chains on 11-speed cassettes is not recommended, due to incompatibility that... See more
• Are SRAM Rival eTap AXS cranksets compatible with Cannondale Ai frame spacing?
No. Rival eTap AXS crankset spindles are not long enough for Cannondale's Ai spacing. If you'd like to talk through AXS-compatible power meter options, please contact our Rider Support team.  See more
• What frame bottom bracket interface standards are Rival cranksets designed to work with?
Our SRAM RED, Force, and Rival 12-speed cranksets are compatible with the following frame bottom bracket interfaces when used with the appropriate SRAM DUB bottom bracket and spacers: BSA 68 PF 86... See more
• Are Rival 43/30T and 1x wide cranksets compatible with the same bottom brackets as SRAM’s other DUB road cranksets?
Yes, with an exception: the wide cranksets require additional spacers outside of the bottom bracket cups. When buying new a bottom bracket with a wide crankset, look for a “WIDE” suffix in the prod... See more
• Are Rival eTap AXS cranksets compatible with Trek’s BB90 bottom bracket standard?
No, the Rival eTap AXS crankset is only available with a DUB spindle which is not compatible with the BB90 bottom bracket type. See more
• Can you use 46/33T and 48/35T chainrings on Rival 43/30T Wide cranks?
No. Rival 12-speed 2x cranksets have an integrated non-removable spider that will not allow for a change to the bolt circle diameter of the larger chainrings.  See the AXS compatibility maps on the... See more
• Are oval 2x chainrings compatible with Rival eTap AXS cranksets?
No, not really. SRAM’s 2x eTap AXS groupsets were designed to shift optimally with round SRAM 12-speed chainrings only. The tooth chamfer profile, chainring spacing, and specifically placed pick-up... See more
• What is the total drivetrain tooth capacity of Rival eTap AXS rear derailleurs?
Drivetrain tooth capacity for Rival eTap AXS rear derailleurs is 39T. Drivetrain tooth capacity is calculated using the following formula: [difference between tooth numbers on largest and smallest ... See more
• Is Rival eTap AXS compatible with SRAM RED or Force eTap AXS parts?
Many parts are cross compatible between SRAM RED, Force, and Rival eTap AXS such as: 12-speed Flattop chains, 12-speed cassettes from 10-28T all the way up to 10-36T, 1x cranksets, 2x cranksets (be... See more
• Can I upgrade parts bit by bit from my SRAM RED eTap 11-speed groupset?
No, SRAM RED, Force, and Rival eTap AXS are not backward compatible with SRAM RED eTap 11-speed. The AXS Mobile App and companion parts require a Bluetooth connection. The SRAM RED eTap 11-speed sy... See more
• What is the max rear tire width compatibility for Rival eTap AXS front derailleurs?
Max rear tire clearance for the standard front derailleur, depending on frame design, is 42mm (measured width) for 700c tires. Bikes with tires wider than this using a standard road width chainline... See more
• Are Rival eTap AXS shift levers compatible with Eagle AXS rear derailleurs?
Yes! AXS allows you to mix and match select AXS Road and AXS MTB components for Adventure builds. Learn more about what this is all about in our article, Gravel Gearing. See more
• Can I use a BlipBox with Rival eTap AXS derailleurs?
Yes, you can! You will not be able to use the drop bar shifters in combination with a BlipBox shifting configuration, however. Either AXS electronic shifters/controllers OR a BlipBox with auxiliary... See more
• Can I use remote shift buttons, like Blips or Clics, with Rival eTap AXS?
While Rival eTap AXS does not have auxiliary ports on the shifter for wired remote shift buttons, you can use SRAM Wireless Blips for remote shift functionality.   See more
• Are there Rival eTap AXS rim brake and disc brake options?
No, Rival eTap AXS is available with a flat-mount disc brake option only.  See more