Variant 1
ECU- Catalog engine
- 1868 90HP
- Controller brand
- DELPHI
- ECU
- MT21M
- Stock power
- 90 HP
- SW upgrade
- 41000891E
- Calibration
- 41000891E
HARLEY DAVIDSON · MT21M ECU
HARLEY DAVIDSON BREAKOUT MT21M tuning files
Everything we work with on the HARLEY DAVIDSON BREAKOUT fitted with the MT21M. Across the matched variants stock power runs from 90 to 90 HP. Stage 1 and Stage 2 are the safe starting points for this platform. We match the right calibration to your exact software and validate it before delivery.
Available solutions
Solutions that apply to the MT21M on this vehicle platform. The exact set depends on the specific engine and software version.
Engine variants & ECU software
1 distinct variant for the HARLEY DAVIDSON BREAKOUT on the MT21M ECU. Reference the engine and controller software when you upload.
Related vehicles
Other vehicles built on the MT21M controller or the same engine — handy when a platform spans several models and makes.
Questions, answered.
Which tuning solutions are available for the HARLEY DAVIDSON BREAKOUT on the MT21M?
Stage 1, Stage 2. The exact set depends on the specific engine and software version.
Do you cover the MT21M ECU software on this model?
Yes — the HARLEY DAVIDSON BREAKOUT on the MT21M ECU is part of the catalog. Upload your original file and it is matched to the right calibration before any work is done.
How is the file delivered?
Through the TuningBay workflow with operator validation and one safe, sensible result per job. Files we deliver, we stand behind.