KTM · M4C ECU

KTM SX M4C tuning files

Here is what the catalog holds for the KTM SX on the M4C. Stock output across the matched variants spans 30–52 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.

Upload your file →All SX coverage

Available solutions

What we can run on the M4C for this vehicle — the precise options narrow down by engine and software version.

Stage 1 Stage 2

Engine variants & ECU software

5 distinct variants for the KTM SX on the M4C ECU. Reference the engine and controller software when you upload.

Variant 1

ECU

Catalog engine: 250 52HP
Controller brand: CONTINENTAL
ECU: M4C
Stock power: 52 HP

Variant 2

ECU

Catalog engine: 125 30HP
Controller brand: CONTINENTAL
ECU: M4C
Stock power: 30 HP

Variant 3

ECU

Catalog engine: 125 30HP
Controller brand: CONTINENTAL
ECU: M4C
Stock power: 30 HP
SW upgrade: KA420SX2351004
Calibration: KA420SX2351004

Variant 4

ECU

Catalog engine: 125 30HP
Controller brand: CONTINENTAL
ECU: M4C
Stock power: 30 HP
SW upgrade: KA440SX2351004
Calibration: KA440SX2351004

Variant 5

ECU

Catalog engine: 125 30HP
Controller brand: CONTINENTAL
ECU: M4C
Stock power: 30 HP
SW upgrade: KA420SX2351006
Calibration: KA420SX2351006

Related vehicles

Other vehicles built on the M4C controller or the same engine — handy when a platform spans several models and makes.

Questions, answered.

Which tuning solutions are available for the KTM SX on the M4C?

Stage 1, Stage 2. The exact set depends on the specific engine and software version.

Do you cover the M4C ECU software on this model?

Yes — the KTM SX on the M4C 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.