SRAM Rival XPLR AXS E1 Wide 13-Speed 1x 42T DUB Power Meter Crankset

This is the power meter version of SRAM's Rival 1x XPLR Wide crankset: a 42T direct mount X-Sync ring, a DUB spindle and a spindle-based power unit that sits inside the crank. It is built for gravel and road riders on 12/13-speed XPLR drivetrains who want training data without a separate pedal or hub system.

Power is measured on the left side and doubled to calculate total watts. The 42T ring is offered in 160, 165, 170, 172.5 and 175mm arms, chainline is 47.5mm, and the DUB bottom bracket is sold separately.

Who It's For

• Gravel and road riders running a SRAM 1x XPLR 12/13-speed drivetrain
• Riders who want built-in power data from the crank
• Riders comfortable with left-side measurement rather than true left/right balance
• Consider a different crank if you need a 2x setup or independent left/right power figures

What to Look For

• Spindle interface: SRAM DUB power meter spindle. A DUB bottom bracket is required and sold separately.
• Chainline: 47.5mm wide chainline with a 150mm Q-factor; check your frame and drivetrain are set up for the Wide crank.
• Ring and length: 42T only; choose 160 to 175mm by fit.

Key Features

Spindle-based power. The power unit is housed in the DUB spindle and measures left-side power, which is doubled to estimate total output. It runs on a user-replaceable AAA lithium battery that SRAM rates for 400+ hours, and it is IPX7 waterproof to 1 meter for 30 minutes.

DUB spindle and wide stance. The DUB spindle keeps bottom bracket choice straightforward, though the bottom bracket itself is sold separately. SRAM lists a 150mm Q-factor and 47.5mm chainline for this Wide crank.

42T direct mount X-Sync ring. The aluminum ring uses SRAM's 8-bolt direct mount interface and X-Sync narrow-wide teeth for chain retention on rough gravel without a front derailleur.

Finish and lengths. Black finish, 9/16" pedal threads, and five arm lengths from 160mm.

Rider Intent Summary

• Biggest strengths: Power, a 1x gravel ring and a wide chainline in one DUB crankset.
• Tradeoffs: Left-side-only measurement; bottom bracket sold separately; single 42T ring.
• What makes it different: The power meter lives in the spindle, so the crank looks and mounts like the non-power XPLR Wide.

Victory's Take

At Victory Bicycle Studio we like this crank for gravel riders starting to train with power, as long as they understand the number is left-leg based. We will confirm your frame works with the Wide chainline before you commit.

Specifications

• Speeds: 12/13
• Chainrings: Single, chain retaining (X-Sync)
• Ring: 42T
• Chainring mount: SRAM 8-bolt direct mount
• Spindle interface: SRAM DUB (power meter spindle)
• Power measurement: Spindle-based, left side (doubled for total watts)
• Battery: AAA lithium, user-replaceable, 400+ hours
• Water resistance: IPX7 (1 meter, 30 minutes)
• Crank lengths: 160, 165, 170, 172.5, 175mm
• Chainline: 47.5mm
• Q-factor: 150mm
• Hub compatibility: 135/142 road disc
• Pedal thread: 9/16"
• Intended use: Road, gravel
• Color: Black
• Bottom bracket: Not included