SRAM Rival E1 Power Meter DUB Left Crank Arm

The SRAM Rival E1 Power Meter DUB Left Crank Arm offers an integrated, spindle-based power solution that’s light, durable, and easy to install. With its accurate left-side power measurement and simple setup, it delivers consistent performance tracking with minimal fuss. Designed for riders who want to train smarter, it balances precision, convenience, and reliability in one discreet unit.

Key Features and Benefits:

• Spindle-based power measurement inside the DUB axle: Captures left-side power output directly from within the spindle. This ensures a cleaner, more compact design that doesn’t require bulky sensors or external parts. The result is seamless compatibility across bikes and a visually streamlined setup.
• Measures left-side power to estimate total output: Provides reliable power data by doubling the left-leg measurement. This allows riders to track and improve performance with consistent metrics. Accurate data supports structured training and better pacing.
• 400+ hour battery life with user-replaceable AAA lithium battery: Uses a standard battery that lasts through months of regular riding. This reduces maintenance demands and eliminates the need for frequent charging. Riders can focus on training without interruption.
• Fully waterproof with IPX7 rating: Withstands wet weather and challenging conditions by sealing electronics within the spindle. This ensures power measurement remains accurate and reliable through all seasons. Ride confidently regardless of terrain or forecast.
• Lightweight design adds less than 40g over standard crankarm: Keeps your bike light without compromising power data. This preserves efficiency and handling on climbs and long rides. Riders gain power tracking with minimal weight penalty.
• DUB bottom bracket system compatibility: Works across all SRAM Road DUB and WIDE DUB setups. This simplifies upgrades and ensures a tight, durable fit. Riders benefit from a longer-lasting, low-maintenance system.

Precision power measurement is key for cyclists targeting improved training outcomes. The Rival E1 crank arm delivers that data without extra clutter or complexity. With a design that hides technology inside the spindle, it offers accuracy, simplicity, and long-term durability—all in a component that fits naturally into your existing setup. It's a reliable upgrade for riders who value clean integration and consistent results.

Upgrade your training tools with a power meter that’s simple, efficient, and built to last. It’s a smart choice for riders focused on performance without the weight or hassle.

Specification:

• Speeds 12/13
• Crank arm length 160mm, 165mm, 170mm, 172.5mm, 175mm
• BB Compatibility All SRAM Road DUB BBs, All SRAM Road WIDE DUB BBs
• Bolt Circle Diameter (BCD) Direct Mount (DM)
• Chainline 44.7mm, 47.5mm
• BB Spindle Interface DUB
• Crank arm material Aluminium
• Colour (Crank arm) Black
• Power Meter Type Spindle