SRAM Rival AXS 1 XPLR E1 DUB WIDE Power Meter Crankset

The SRAM Rival AXS 1 XPLR E1 DUB WIDE Power Meter Crankset brings built-in power measurement to SRAM's gravel-focused Rival AXS lineup — sitting below Force but above Apex in the hierarchy, and delivering training-grade data without requiring a separate third-party meter. Designed specifically for 1x drivetrains and XPLR-style riding, this crankset pairs a 42-tooth single chainring with SRAM's DUB wide spindle interface to cover the mixed-terrain demands of gravel and adventure riding. If you want accurate watt data on a capable gravel build without stepping up to Force-level pricing, this is where to start.

The E1 designation marks SRAM's updated power meter generation, with strain gauges integrated directly into the left crank arm to capture and transmit power data over Bluetooth and ANT+ — compatible with bike computers, smartwatches, and training platforms across the board. The DUB WIDE spindle accommodates the wider bottom bracket shells common on gravel frames, and the system works across SRAM's broad range of DUB-compatible BBs. The 42t chainring is sized to work with SRAM's X-Range cassette gearing, giving you the wide-range progression that varied terrain demands. Crank arm lengths run from 160mm through 175mm, so whether you're fitting a smaller rider or dialing in biomechanics, there's an option that works.

SRAM Rival AXS 1 XPLR Specs at a Glance

• Chainring: 42t (1x configuration)
• Crank arm lengths: 160mm, 165mm, 170mm, 172.5mm, 175mm
• Bottom bracket interface: DUB WIDE
• Power meter generation: E1
• Transmission: Bluetooth and ANT+
• Drivetrain compatibility: SRAM AXS XPLR 1x
• Intended use: Gravel and mixed-terrain riding

Design Benefits

1. Integrated power measurement — Rather than adding an aftermarket pod or replacing a spider, the E1 power meter is built into the crank arm itself, keeping the build clean and the data reliable without adding complexity to installation or maintenance.
2. DUB WIDE compatibility — The wider spindle interface is engineered to align with the broader bottom bracket standards found on many modern gravel frames, reducing the need for adapters and keeping your drivetrain properly aligned under load.
3. 1x XPLR-specific gearing — The 42t single chainring is matched to SRAM's XPLR cassette ecosystem, designed to give gravel riders a usable gear range from smooth tarmac connectors to punchy gravel climbs — without the weight and mechanical complexity of a front derailleur.