Cranksets get confusing when half the SKUs ship without chainrings, and this is one of them. The Rival AXS E1 DUB Crank Arm Assembly from SRAM is exactly what the name says — left and right arms, spindle, and the 8-bolt direct-mount interface, with no spider, no chainrings, and no bottom bracket cups in the box. It's what you order when you're building around a Quarq power meter spider, running a 1x setup with a direct-mount ring you're sourcing separately, or replacing a damaged arm without paying for chainrings you'd immediately pull off.

The arms are forged aluminum, run a DUB spindle interface, and are compatible with all SRAM Road DUB and Road WIDE DUB bottom brackets across BSA, PF30, BB30, and T47 shell standards. Chainline is 44.7mm on this standard version — the WIDE variant runs 47.5mm for gravel and XPLR builds that need the extra clearance. The 8-bolt direct-mount interface accepts SRAM's power and non-power AXS spiders and integrated chainrings , so you can spec this now with a basic spider and add a Quarq DUB power meter spider later without pulling the arms.

Rival E1 works with both 12-speed and 13-speed AXS drivetrains , which matters if you're building on the newer XPLR 13-speed platform or planning to migrate to it. Crank arm lengths run 160mm, 165mm, 170mm, 172.5mm, and 175mm, all in black , so you can dial fit without stepping up to Force or Red pricing. The Rival tier sits below Force in the AXS hierarchy — the arms are heavier than their Force equivalents, but the interface, spindle standard, and compatibility are identical, which is why this is a common choice for training bikes, second builds, and gravel rigs that see abuse.... Read More