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Modern drivetrain with power measurement: the Red 1 AXS power meter crank set by QUARQ
The QUARQ Red 1 AXS power meter crankset takes into account the fact that in some disciplines there is simply nothing like 1x drivetrains. With its simplicity, rigidity and robustness, it meets the requirements of Cyclocross and other (off-road) riders. Direct Mount chainrings are more aerodynamic, while the narrower gear gradation is especially suitable for racing and flatter terrain. This Red 1 AXS crank features fully integrated power measurement with proven QUARQ technology.
Information regarding the return of batteries and electrical equipment:
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Application: Cyclocross, Road, Gravel
Type: power meter crankset (dual-sided)
Chainring Mount: SRAM Direct Mount
Series: SRAM Red AXS
Crankarm Material: carbon
Chainring Material: aluminium
Gradation: 40 tooth, 44 tooth, 46 tooth
Crankarm Length: 170.0 mm, 172.5 mm, 175.0 mm
Chainline: 45 mm
Axle Diameter: 28.99 mm
Recommended Bottom Bracket: SRAM Road DUB
Tolerance: +/- 1.5 %
Point of Measurement: spider
Power Source: CR2032 lithium battery
Data Collected: power (dual-sided), cadence, torque, pedal stroke uniformity
Data Transfer: ANT+, Bluetooth
- 1x drivetrain for simplified functionality
- fully integrated power measurement based on spider
- chainrings easily exchangeable without recalibration
- performance measurement is not affected by temperature fluctuations
- power measurement for left and right leg separately
- SRAM X-Sync™ Wide-Narrow chainring technology for maximum chain control
- durable laser finish of the chainring
- durable and simple DUB bottom bracket standard
- non-aero chainrings can be mounted with a single tool
QUARQ Operating Principle
The crankset forms the heart of your bike. Their only task is to convert the force of both legs into forward motion - the perfect place to measure performance.
Power meters calculate power by measuring torque (pedal force) and angular velocity (cadence). Power = torque x cadence. When you pedal, all parts of the bicycle drivetrain shift (bend) slightly under the load. Power meters are designed using FE analysis so that these displacements take place in a very controlled manner and at specific locations in relation to the applied load. Strain gauges are used to measure this displacement and thus calculate the applied torque. Reed switches are used to calculate the cadence.
DZero is QUARQ's next generation power meter, named after the DZero Experiment, one of the most accurate and innovative scientific projects to discover subatomic particles. With a revised measurement loop, an optimised strain gauge design, increased accuracy and modern software, DZero represents the " state of the art" for power meter technology. You can choose between Bluetooth LE and ANT+ technology for data transfer.
AXS is SRAM's electronic integration platform that combines electronic bicycle components and software. The SRAM AXS app allows you to view battery status, change component behaviour, adjust controls, receive maintenance reminders and update firmware.
X-Sync 1x chainrings by SRAM provide the highest performance and durability. The long SRAM X-Sync tooth edges grip the chain earlier than traditional triangular teeth. The sharp and narrow tooth profile and the rounded bevelled edges support the chain guide. To provide the best possible performance on muddy terrain, the X-Sync chainrings have recesses for removing dirt and mud for the inner chain links and rollers.
Manufacturer Part Numbers:
170.0 mm 40 tooth: 00.3018.214.170
172.5 mm 40 tooth: 00.3018.214.172
175.0 mm 40 tooth: 00.3018.214.175
170.0 mm 44 tooth: 00.3018.212.170
172.5 mm 44 tooth: 00.3018.212.172
175.0 mm 44 tooth: 00.3018.212.175
170.0 mm 46 tooth: 00.3018.211.170
172.5 mm 46 tooth: 00.3018.211.172
175.0 mm 46 tooth: 00.3018.211.175
- 1 x QUARQ Red 1 AXS power meter crankset (40 tooth, 44 tooth or 46 tooth)