Standalone Quick Shifter Control for EFI Powersports Applications.
The aRacer QSS V2 – QS Sport V2 is a standalone quick shifter system designed for supported 1–4 cylinder EFI applications using inductive ignition coils. It provides quick shift control without requiring an aRacer ECU, making it a flexible option for many motorcycle, scooter, mini moto, ATV, and powersports builds.
What It Is
A standalone quick shifter control system with MotoGP-grade piezoelectric sensor technology, app-based setup, and configurable push / pull shift direction. The QSS V2 is designed for EFI ignition-coil systems and supports quick shift cut control where properly installed and configured.
What It Does
- Provides standalone quick shifter functionality
- Works with supported 1–4 cylinder EFI systems using inductive ignition coils
- Uses MotoGP-grade piezoelectric shift sensor technology
- Supports push or pull shift sensor configuration
- Allows quick shift action time to be adjusted by engine speed
- Uses the dedicated QSSport app for setup, adjustment, and monitoring
- Can be used with OEM ECU or compatible aRacer ECU setups where properly installed
App-Based Setup
The QSS V2 uses the dedicated QSSport app for quick setup, monitoring, and adjustment. The app includes a quick setting wizard and supports two-way push / pull shift setup to match the vehicle’s shift linkage configuration.
Compatibility
The QSS V2 is intended for supported 1–4 cylinder EFI systems using inductive ignition coils. It is not intended for CDI ignition systems unless specifically confirmed compatible.
Some applications may be supported with available accessory harnesses. Other applications may require custom harness modification, wiring work, or professional installation.
Product Information
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Product: aRacer QSS V2 – QS Sport V2
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Type: Standalone quick shifter system
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Application: Supported 1–4 cylinder EFI inductive ignition-coil systems
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Sensor Type: Piezoelectric shift sensor
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Setup: QSSport app
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SKU: PA-QH015
Common Uses
- Standalone quick shifter installation
- OEM ECU applications where supported
- aRacer ECU applications where standalone quick shift control is desired
- Motorcycle, scooter, mini moto, ATV, and powersports builds
- Push or pull shift linkage configurations
Important Note
The QSS V2 is a standalone quick shifter system. Compatibility depends on vehicle ignition type, cylinder count, wiring configuration, shift linkage setup, and installation quality. Some vehicles may require harness modification or professional installation.
For a quick shifter expansion kit designed specifically for supported aRacer ECU systems, see the aRacer QSR V2 – Quick Shift Race V2.
North American Support
- Supported by aRacer ECU R&D of America LLC
- U.S.-based technical support
- North American validation and platform development
- Fast domestic shipping from California when in stock
Use Notice: This product is intended for compatible EFI ignition-coil systems only. Customer is responsible for confirming compatibility before purchase or installation.
Competition Use Notice: Some products are intended for closed-course competition, off-road, testing, research, or development use only where applicable. Customer is responsible for compliance with all applicable laws and regulations.
California Proposition 65 Warning
WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.
