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For the love of MINI Bikes


ARacer RC Super X Stage 3 Ultimate Engine Management System ECU will completely replace the OEM ECU on the HONDA GROM 125 (2014-2020)! This is not a piggyback ECU, the RC Super X completely removes the OEM ECU! This will eliminate all of the issues that would occur with the OEM ECU, giving you full control of how the engine will run without any worries of random changes that typically occurs with a piggyback ECU. Adjustments could be made with a laptop. The RC Super X is 100% plug and play, no wiring needed!


ARacer RC Super X Stage 3 is a Complete engine management system that allows you to make all adjustments via a laptop. Pair this up with the correct fuel injector size and you could easily tune your engine to run.

Tuning could be done on a dyno (highly recommended) or safely on a backroad/street using a wideband o2 gauge and sensor with the autotune function.

Optional DG1 and AF2 combo option is available and recommended to be used with the Super X to monitor A/F ratio.

New six-core MCU & dual MCU block division is 21% faster

CFD heat dissipation analysis & Layout design, heat dissipation increased to 58%

360-degree WiFi antenna design, signal strong increase to 20%

CNC shell, anodized treatment & diamond cut heat sink design, heat dissipation increased to 66%

Fly Recorder built-in memory, capacity increased to 33%

RC2 Super X ECU

Fuel and Injection phase adjustable

Ignition timing and dwell time adjustable

Manifold Air Pressure base for inlet air amount calculation

Released engine speed limited

Environment temp and Baro compensation available

Free MAP download for various vehicle model (Honda, Yamaha, Suzuki, Kawasaki, Kymco, SYM…)

Increase almost 10% above power after calibration (depend on engine model)

Easy plugin (remove stock ECU and install Super X ECU without any harness modified)

Same connector as stock ECU

Super Super X ECU meet IP67 specs

Support Auto-Tune with aRacer AF2 wideband sensor module

Race & ECOMAP real-time switch with iMode

Launch mode for racing start

Valet mode for anti-thief or running usage

ARacer RC SuperX Stage 3 Ultimate for Honda Grom/Monkey



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