aRacer QSR V2 Quick Shift Race V2

The QSR V2 is aRacer’s race quick shifter kit for Super X / Super XX ECUs. A piezoelectric shift sensor sampled up to 1,000 times a second feeds the ECU directly, so the ignition cut is timed by the ECU rather than a dumb switch: clutchless upshifts that are faster, more consistent and closed-loop corrected. On ride-by-wire bikes it can also handle downshift blipping. Developed and proven in Asia Road Racing Championship competition.

This is an ECU expansion kit, not a standalone shifter — it only works with a supported aRacer Super X / Super XX ECU. For a standalone unit on a bike with the stock ECU, see the QSS V2.

Features

• Clutchless upshifts controlled by the ECU
• Downshift control on compatible ride-by-wire applications
• Piezoelectric sensor, up to 1,000 Hz sampling
• Closed-loop shift control for timing and smoothness
• Standard or reverse (GP) shift pattern where compatible
• Compact, lightweight, with self-diagnosis

Compatibility

aRacer RC Super X and RC Super XX ECUs only. Not for Mini X / Mini XX or older ECUs. Requires correct sensor installation and ECU calibration.

Specifications

• Part number: PD-M0056
• Sensor: Piezoelectric
• Sampling: Up to 1,000 times per second

Closed-course competition use only. aRacer ECUs and race electronics are sold for closed-course competition, off-road, dyno and development use. They are not CARB-approved or EPA-certified for pollution-controlled vehicles on public roads. You are responsible for complying with the laws that apply to you.

Dealer support

Mala Racing is an authorized aRacer SpeedTek dealer. Orders ship from California, and U.S.-based technical support, calibration help and the aRacer calibration database are available through aRacer ECU R&D of America. Not sure about fitment or which accessories you need? Email malaracingllc@gmail.com with your bike, year and mods before you order.

California Proposition 65 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 go to www.P65Warnings.ca.gov.