INPEAK GRX RX820 Powercrank - Single

The INPEAK Shimano GRX RX820 Powercrank - Single is a single-sided power meter crankset that delivers accurate power data, long battery life, and reliable performance for gravel, road, and MTB use. It integrates directly with Shimano GRX FC-RX810/RX820 cranksets and uses ANT+ and Bluetooth to transmit detailed riding data. The unit is lightweight, waterproof, and built to handle harsh conditions. Each unit is individually calibrated to ensure consistent accuracy across every ride. Active temperature compensation keeps readings stable from -5°C to +50°C, so data remains reliable in changing weather.

Key Features and Benefit:

• Single-sided power meter integration: The power sensor is built into the crank arm, measuring power from one leg and calculating total output. This keeps the system simple and reduces weight while still delivering consistent data. The result is reliable power tracking without added drivetrain complexity.
• ANT+ and Bluetooth connectivity: Dual transmission protocols allow the power meter to connect to a wide range of head units and training apps. This ensures seamless data transfer across devices, so you can train, track, and analyse performance without compatibility issues.
• ±2% measurement accuracy: High precision sensors and individual calibration ensure accurate power readings within a tight margin. This level of accuracy supports structured training and consistent performance tracking. The outcome is data you can trust for pacing, intervals, and progression.
• Active temperature compensation (ATC): The system automatically adjusts for temperature changes between -5°C and +50°C. This prevents fluctuations in readings caused by environmental conditions. The result is stable and repeatable data in all weather.
• IP67-rated waterproof and impact-resistant housing: The sealed unit protects internal electronics from water, dust, and impacts. This increases durability in off-road and wet conditions. The outcome is dependable performance with minimal risk of failure.
• Long battery life (CR2032): The power meter runs up to 200 hours on a single CR2032 battery. Extended battery life reduces maintenance and downtime. The result is more riding time with fewer interruptions.
• Advanced cycling dynamics (TWiN2): Metrics such as cadence, torque effectiveness, pedal smoothness, and left/right balance provide deeper insight into pedalling efficiency. This helps identify inefficiencies and refine technique. The outcome is improved performance through data-led adjustments.
• Lightweight design (10g sensor): The compact unit adds minimal weight to the crankset. This maintains the bike’s handling and efficiency. The result is accurate power measurement without compromising ride feel.

Consistent and accurate power data is essential for structured training and performance tracking. The INPEAK POWERCRANK system provides stable readings across varied conditions, supported by individual calibration and temperature compensation. Its compatibility with training platforms and head units ensures that data integrates smoothly into your routine. With detailed metrics and dependable operation, it supports steady improvement based on measurable output.

This crankset offers a practical way to bring power-based training to your setup without adding unnecessary complexity. Its durability, accuracy, and ease of use make it a reliable upgrade for consistent performance tracking.

Specification:

• Measurement precision: ± 2% 
• Power measurement range: 20-2000 W 
• Cadence range: 20-200 rpm 
• Weight: 10g (INPEAK device) 
• Case tightness: IP67 
• Manual zero-offset calibration: Yes 
• Temperature compensation: Yes 
• Gyroscope + Accelerometer: Yes 
• Torque Effectiveness: Yes 
• Pedal Smoothness: Yes 
• Cycling Dynamics: Yes (TWiN2) 
• Balance L/R: Yes (TWiN2) 
• Operating temperature: from -5°C to +50°C 
• Storage temperature: from -20°C to +50°C 

Battery specifications

• Battery type: Lithium CR2032 3V 
• Battery capacity: 200 mAh 
• Battery autonomy in use: max. 200 hours 
• Battery autonomy in sleep: max. 6 months 
• Battery autonomy in ShipMode: max. 24 months 
• Low battery notification: Yes 

Software specifications

• Software update from INPEAK MANAGER App: Yes 
• Modification of “Scale Factor”: Yes 
• Zwift Compatible Mode: Yes 
• ANT+ Compatibility: Yes 
• Bluetooth Low Energy Compatibility: Yes 
• Auto sleep: Yes 
• Auto wake-up: Yes 

Package contents

• Crank with integrated power meter
• Brief instruction manual
• Sticker set
• Spare O-Ring
• Device data card
• 1x CR2032 battery