SR Suntour HESC 4-Pin Torque Sensor for Carrera & Raleigh E-Bikes

Not sure if your torque sensor is faulty? Read our full diagnostic guide here.

SR Suntour HESC 4-Pin Torque Sensor for Carrera & Raleigh E-Bikes

Genuine SR Suntour HESC 4-pin torque sensor for Carrera and Raleigh e-bikes. Designed for selected HESC systems, this replacement sensor helps restore reliable pedal assist and smooth power delivery.

This 4-pin version is typically used on earlier HESC systems and is commonly fitted to selected pre-2021 Carrera and Raleigh e-bikes.

Compatibility

• Carrera models (typically pre-2021): Crossfire-e, Vulcan-e, Vengeance E, Subway E
• Raleigh models: Selected models using SR Suntour HESC drivetrain with 4-pin connector
• Suitable for SR Suntour HESC systems using the 4-pin ATS connector
• Not compatible with post-2021 models that use the 6-pin connector — check your connector before ordering

Specifications

• 4-pin connection
• ATS torque sensor unit
• Fits 38T / 42T / 48T chainsets

Common Signs You May Need This Sensor

• Pedal assist not working correctly
• Intermittent power or cut-outs while riding
• Reduced or inconsistent pedal response
• Physically damaged torque sensor

Important Information

Check whether your bike uses a 4-pin or 6-pin connector before ordering.

This sensor is designed for selected models up to 2020 and is not compatible with newer 2021+ systems that use the 6-pin version.

Why Choose This Sensor?

• Direct replacement for faulty torque sensors
• Designed for reliable fit and performance
• Helps restore accurate pedal assist response

Not sure which version you need? Check your existing connector or use our diagnostic guide before ordering.

Order today and get your e-bike back up and running quickly.

Compatible Bikes (4-Pin / Pre-2021 HESC Models)

Carrera Crossfire E, Carrera Vengeance E, Carrera Subway E, Carrera Vulcan E (typically 2018–2020 models). Raleigh Motus, Raleigh Array, Raleigh Stow-E-Way (pre-2021 models). All models using the SR Suntour HESC system with a 4-pin torque sensor connector. If your bike was manufactured after 2021, you may need the 6-pin version instead.