aRacer RC Mini XX ECU – Honda CBR300R 2014+

Stop fighting your OEM ECU and take full control of your CBR300R. The aRacer RC Mini XX is a standalone engine management system — not a piggyback — that completely replaces the factory ECU. No more locked tables, no more random correction fighting your changes. You decide how the bike runs.

It's 100% plug and play. Pull the stock ECU, drop the Mini XX in, and you're done — no cutting, no splicing, no harness modification. Tuning happens right from your phone or tablet over WiFi through the free aRacer X-Tune app. Adjust fuel, spark, engine, and vehicle settings, watch live engine vitals, log your runs, and save or share tunes on the fly.

Want it to tune itself? Add the aRacer AF2 Wideband Autotuner module and turn on AutoTune for closed-loop air/fuel corrections. Pair the Mini XX with the right injector  and supporting mods and you've got a genuinely tunable CBR300R — clean fueling, adjustable rev limit, and repeatable results.

Bullets:

• Standalone ECU — fully replaces the OEM unit (NOT a piggyback)
• 100% plug and play — no wiring, cutting, or splicing
• Wireless tuning + monitoring via the free aRacer X-Tune app 
• Real-time fuel, ignition timing, and rev-limit adjustment
• Data logging — record, review, and dial in every run
• Save and share custom tunes
• AutoTune capable with the aRacer AF2 Wideband module (sold separately)
• Full engine vitals monitoring on your phone or tablet

Specs / Fitment:

• Fitment: Honda CBR300R, 2014+
• Type: Standalone ECU (direct OEM replacement)
• Connectivity: Wifi
• App: aRacer X-Tune (free)
• Region: USA models only — international harnesses may differ