2025 Sram Quarq XX SL Eagle AXS Transmission Power Meter

The XX SL Eagle AXS Transmission Power Meter records and delivers live, accurate power readings to your head unit. Utilizing an all-new spider-based design, this is our most accurate, high performing power meter. The spider design uses a proprietary thread-on chainring mount system which has allowed us to reduce weight without compromising reliability. A dual sided power measurement system calculates total watts, it's subtle, lightweight, and boasts unbeatable battery life. It is also compatible with the Flight Attendant system, allowing for total connectivity between all AXS enabled components. No-compromise, high-performance data delivery giving you an edge over the competition.

Features

• All new design with proprietary thread-on T-Type chainrings, available in 32-38t.
• Compatible with all Eagle Transmission 8-Bolt cranks.
• Compatible with Flight Attendant.
• +/- 1.5% accuracy.
• User replaceable CR2032 battery 200-hour battery life.
• Bluetooth low energy technology and ANT+ wireless data transfer.
• MagicZero - automatically checks and recalibrates your power meter as you ride.
• AxCad -- no cadence magnet required.
• 10K Temperature Compensation.
• Waterproof (IPX7 waterproof to 1 meter for 30 minutes).
• AXS™ enabled for easy monitoring and firmware upgrades

Technical Features

DUB

The relationship between bottom bracket spindle and bearing is the core of DUB technology. It's where stiffness meets durability. We took it a step beyond conventional thinking and made everything simpler-better integrating the relationship between chainring, crank, spindle and bottom bracket. It's this approach to developing a complete system that equals better drivetrain performance.

X-Range

Road bikes are faster and more capable than ever before, and riders are expanding what's possible with drop bar bikes. X-Range is gearing for today's road riding. We completely reimagined road gearing for wider range, more useful and smoother gear progression, as well as smarter shift settings-enabled by AXS. With X-Range, you're always in the right gear.

DUB-PWR

DUB-PWR takes Quarq's reliable and accurate power measurement and elegantly houses it inside the DUB crank spindle for compatibility with any chainring setup, measuring left side power to calculate total watts. It's lightweight, invisible and attainable.

AXS

AXS is SRAM's new bike component integration system that connects electronic bicycle components and software. The SRAM AXS app allows riders to see battery status, change component behavior, personalize controls, get maintenance reminders, and update firmware.

Click for Specifications

Click for Power Meter User Manual