Variant 1
ECU- Catalog engine
- 1100 120HP
- Controller brand
- DELPHI
- ECU
- MT21M
- Stock power
- 120 HP
- SW upgrade
- 41001247
- Calibration
- 41001247
HARLEY DAVIDSON · MT21M ECU
HARLEY DAVIDSON ROAD GLIDE MT21M tuning files
Here is what the catalog holds for the HARLEY DAVIDSON ROAD GLIDE on the MT21M. Stock output across the matched variants spans 120–120 HP. Stage 1 and Stage 2 are the safe starting points for this platform. Every file is matched to the exact calibration on your vehicle and signed off by an operator.
Available solutions
Applicable work for the MT21M on this vehicle. The available set firms up once the exact engine and software are known.
Engine variants & ECU software
1 distinct variant for the HARLEY DAVIDSON ROAD GLIDE 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 ROAD GLIDE 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 ROAD GLIDE 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.