INPEAK Shimano GRX RX810/RX820 Powercrank-E - Single

The INPEAK Shimano GRX RX810/RX820 Powercrank-E - Single is a single-sided power meter crank that delivers precise power data, rechargeable convenience, and reliable performance for gravel and road riding. It integrates directly with Shimano GRX FC-RX810/RX820 cranks, using a lightweight 10 g sensor with ±2% accuracy. The rechargeable Li-Po battery charges via a magnetic USB cable and provides up to 90 hours of use. ANT+ and Bluetooth connectivity ensure full compatibility with training devices and apps. A sealed IP67 housing and active temperature compensation maintain consistent readings in all weather conditions.

Key Features and Benefits:

• Single-sided power meter integration: Measures power directly from the crank arm using a precise strain gauge system. This gives consistent and accurate data without adding complex components, resulting in reliable training metrics with minimal setup.
• Rechargeable Li-Po battery system: Uses a 110 mAh rechargeable battery with magnetic USB charging. This removes the need for disposable batteries, reduces maintenance, and ensures long operating time of up to 90 hours between charges.
• ±2% measurement accuracy: Individually calibrated power measurement ensures a high level of precision. This supports structured training by providing dependable data, leading to better pacing and performance tracking.
• ANT+ and Bluetooth connectivity: Transmits power, cadence, and cycling dynamics data to a wide range of devices and apps. This allows seamless integration with head units and platforms, ensuring consistent data across all training systems.
• Active temperature compensation (ATC): Automatically adjusts readings across -5°C to +50°C. This prevents data drift caused by temperature changes, ensuring stable and accurate output in all riding conditions.
• IP67 waterproof and durable housing: Fully sealed electronics protect against water, dust, and impact. This increases product lifespan and ensures dependable use in wet and harsh environments.
• Advanced cycling dynamics (TWiN2): Includes torque effectiveness, pedal smoothness, and left/right balance metrics. This provides deeper insight into pedalling efficiency, helping refine technique and improve overall output.
• Lightweight low-profile design: Adds only 10 g to the crank arm with a compact form. This maintains the original feel of the bike while delivering full power measurement, ensuring no compromise in performance or handling.

Consistent and accurate power data supports structured training and performance tracking across every ride. The combination of precise measurement, stable transmission, and temperature-resistant performance ensures that the data remains reliable over time. Integration with Shimano GRX maintains drivetrain compatibility while adding detailed performance metrics. The rechargeable system reduces long-term maintenance and keeps the setup simple.

This power meter crank provides accurate data, long battery life, and durable construction in a single unit. It fits easily into your existing setup and works with your preferred training platforms. It is a practical upgrade for riders who want clear and reliable performance data on every ride.

Specification:

• Measurement precision: ± 2% 
• Power measurement range: 20-2000 W 
• Cadence range: 20-200 rpm 
• Weight: 10 g (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: "Li-Po, rechargeable "
• Battery capacity: 110 mAh 
• Battery autonomy in use: max. 90 hours 
• Battery autonomy in sleep: max. 6 months 
• Battery autonomy in ShipMode: max. 24 months 
• Charging time (0% -> 100%): 2 hours 
• Low battery notification: Yes 
• Battery charging temperature: from +5°C to +40°C 
• Battery lifetime: Less than 20% capacity loss after 300 full cycles. Approximately 6 year lifetime. 
• Required charger: 5VDC, 1000mA (not included)

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 
• USB charging cable
• Brief instruction manual 
• Sticker set
• Device data card