Crank arms without chainrings exist for a reason. Maybe you're running a power meter spider that came with its own rings, or you've already got chainrings from a previous build that still have plenty of life. The SRAM Red AXS E1 DUB Crank Arm Assembly gives you the flagship carbon construction and DUB spindle interface without forcing you to pay for rings you don't need.

The carbon layup here is the same stuff that goes into complete Red AXS cranksets. SRAM uses a hollow construction method that maintains stiffness while keeping weight competitive with the best in the road category. The DUB spindle system works across multiple bottom bracket standards through SRAM's range of DUB bottom brackets, so whether your frame runs BSA threaded, PF30, BB386, or T47, there's a compatible bottom bracket that makes this crankset work.

The direct mount interface on these arms accepts SRAM's 8-bolt chainring pattern. That means compatibility with SRAM's own Red, Force, and Rival AXS chainrings, plus power meter options from Quarq and third-party manufacturers who've adopted the standard. If you're building around a Quarq power meter spider, this is the pairing SRAM designed for.... Read More