SRAM Rival AXS E1 12-Speed 2x DUB Power Meter Crankset

The SRAM Rival AXS E1 power meter crankset pairs aluminum arms and an integrated 2x chainring with a spindle-based power unit on the DUB platform. It brings power data to a 12-speed road bike without changing pedals or wheels.

Ring options are 46/33T in 160 to 175mm and 48/35T in 165 to 175mm. The meter measures left-side power and doubles it to calculate total watts. Chainline is 45mm and the DUB bottom bracket is sold separately.

Who It's For

• Road riders on SRAM 12-speed AXS 2x drivetrains who want power data
• Riders who need short arms; 160mm is offered with 46/33T
• Riders happy with left-side power estimation
• Consider a different crank if you want independent left/right measurement or a 1x ring

What to Look For

• Spindle interface: SRAM DUB power meter spindle; bottom bracket not included.
• Ring and length pairing: 46/33T in 160, 165, 170, 172.5, 175mm; 48/35T in 165, 170, 172.5, 175mm.
• Measurement: left side, doubled for total watts.

Key Features

Spindle-based power. The unit inside the DUB spindle measures left-side power. A user-replaceable AAA lithium battery is rated for 400+ hours, and the meter is IPX7 waterproof to 1 meter for 30 minutes.

Aluminum arms. SRAM shapes the arms to put material only where it is needed for stiffness to weight, so adding power does not mean a heavy crank.

Integrated 2x ring with X-Range gearing. The aluminum double mounts via SRAM's 8-bolt direct mount interface. SRAM designs X-Range for wider range and smoother steps between gears. Chainline is 45mm.

DUB spindle. The DUB bottom bracket is sold separately; choose the version for your frame's shell.

Rider Intent Summary

• Biggest strengths: Power plus 12-speed X-Range double gearing in one aluminum crank.
• Tradeoffs: Left-side-only measurement; bottom bracket sold separately; 48/35T does not come in 160mm here.
• What makes it different: Power sits in the spindle, behind an integrated 8-bolt direct mount double ring.

Victory's Take

At Victory Bicycle Studio we pair this crank with a fit check on length, since it offers 160mm with 46/33T for riders who benefit from shorter arms. We will explain what left-side power does and does not tell you before you order.

Specifications

• Speeds: 12
• Chainrings: Double, integrated aluminum
• Ring options: 46/33T, 48/35T
• 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 (46/33T only), 165, 170, 172.5, 175mm
• Chainline: 45mm
• Hub compatibility: 135/142 road disc
• Pedal thread: 9/16"
• Intended use: Road
• Color: Black
• Bottom bracket: Not included