Crank arm assemblies let you replace worn or damaged arms without buying a complete crankset. The SRAM Rival AXS E1 DUB Wide Crank Arm Assembly includes the drive-side and non-drive-side arms with the spindle pre-installed, ready to accept your existing chainrings. The "Wide" designation refers to the Q-factor—the distance between the pedal mounting surfaces—which measures 151mm compared to the standard Rival's narrower stance. This wider Q-factor matches the chainstay requirements of gravel bikes and frames designed around larger tire clearances.

The E1 in the name indicates this is the first-generation AXS design for Rival, distinguishing it from any future revisions. DUB refers to SRAM's spindle and bottom bracket system that uses a 28.99mm spindle diameter. The system works across multiple shell standards—BSA threaded, PF30, BB30, T47—by using shell-specific DUB bottom brackets while keeping the same spindle interface. If you're replacing arms on an existing Rival AXS crankset, your current DUB bottom bracket stays in place.

These arms ship without chainrings, which keeps costs down when your original rings still have life left. The direct-mount interface accepts SRAM's 1x chainrings (wide/narrow tooth profile for chain retention) or their 2x outer rings paired with a bolt-on inner ring. Power meter compatibility carries over from the complete crankset—the drive-side arm accepts SRAM's Rival or Force AXS power meter spider if you want to add power measurement later.... Read More