The DUB spindle interface simplified crankset installation across SRAM's mountain and road lines, and the Red AXS crankset puts that system at the top of their road hierarchy. The carbon fiber arms use a hollow construction that maintains stiffness while keeping weight competitive with the lightest cranksets on the market. A one-piece design integrates the spindle directly into the drive-side arm, eliminating the junction between separate spindle and arm pieces where flex can occur.

Red AXS cranksets work exclusively with SRAM's 12-speed AXS road groupsets. The direct mount chainring interface uses SRAM's X-SYNC tooth profile, which alternates wide and narrow teeth to match the inner and outer plates of the chain. This tooth shaping keeps the chain seated during rough descents and out-of-the-saddle efforts where traditional chainrings might let the chain bounce. For this 2x configuration, you get the 48/35T combination that's become the modern replacement for the old compact 50/34 setup—similar range, but with more usable jumps between gears when paired with a tight cassette.

DUB bottom bracket compatibility spans BSA threaded, PF30, BB30, T47, and PF86 shells depending on which bottom bracket you install. If you're swapping from an older SRAM crankset with GXP interface, you'll need a new DUB-specific bottom bracket—the spindle diameters are different. The 8-bolt direct mount interface for the chainrings means you're locked into SRAM's ecosystem for ring replacement, but availability isn't an issue given Red's position in their lineup.... Read More