⟲ 360° — drag meThe facts.
| Model | JP MJ 003 |
|---|---|
| Manufacturer | JetPrime |
| Material | CNC-milled Ergal 7075 |
| Fits | Harley Davidson Sportster 1200 Custom XL1200C (2019–2019) |
| Installation | Plug-and-play, no wiring harness modifications required |
DescriptionThe whole story▼
The JP MJ 003 corrects what a homologation map costs the Sportster 1200 Custom XL1200C at part throttle, which is where almost all road riding actually takes place.
Key Features
- Harley Davidson Sportster 1200 Custom XL1200C (2019)
- Preset fuel module, no programming required
- Corrects the mixture without remapping the original electronics
- Plug-and-play with model-specific wiring
- Around 200 g, fitted in an evening
- Unplugs at any time, nothing is written to the motorcycle
More Capacity, Same Architecture
The 1200 is the 883 bored out, which gives it noticeably more torque without changing anything about how the engine breathes.
An Evening's Work at Most
Seat off, tank lifted on some models, connectors separated, module plugged in and tied down. There is nothing to configure and nothing to learn afterwards, which is unusual for anything electronic on a motorcycle.
Nothing to Service
There is no interval, no filter and nothing to inspect. The module is sealed and it either works or it does not, which after the first ride it demonstrably does.
The Standard Electronics Are Untouched
No parameter is written, no memory is cleared and no adaptation is reset. That is the difference between adding a module and reflashing a controller, and it is the reason this is reversible in a minute.
The Contents of the Package
A module and a harness cut for one motorcycle. Everything else is the owner's, which keeps the price where it is and the fitting as short as it is.
Honest Diagnostics
A motorcycle whose controller has never been written to reports faults properly for the rest of its life. That is a quiet advantage that only shows up when something goes wrong.
Heat
Under a seat is warmer than most owners assume once an engine has been working. The module is built for it, but pressing it against a subframe rail that carries exhaust heat is still worth avoiding.
The Cost of Doing Nothing
A motorcycle with an aftermarket exhaust and a standard map is not damaged, only running further from ideal than it needs to. Plenty of owners live with that quite happily for years.
Fitment and Compatibility
- Harley Davidson Sportster 1200 Custom XL1200C (2019–2019)
Specifications
| Model | JP MJ 003 |
|---|---|
| Manufacturer | JetPrime |
| Material | CNC-milled Ergal 7075 |
| Fits | Harley Davidson Sportster 1200 Custom XL1200C (2019–2019) |
| Installation | Plug-and-play, no wiring harness modifications required |
What's includedEverything in the box▼
- 1x power module
FitmentWhich bikes this fits▼
- Harley Davidson Sportster 1200 Custom XL1200C (2019)
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Our team is happy to help. Use the contact button below and we’ll personally help you choose the right gear or part.
Measure your head circumference about one centimetre above your eyebrows and compare it with the size chart on this page. Between sizes? Choose the smaller one — the padding beds in with use.
Yes — it’s tested and approved to the current ECE 22.06 standard and road-legal across the EU.
Most of our touring and sport helmets are Pinlock-ready and many include the insert. Check the ‘What’s in the box’ section on this page for this model.
Yes — the cheek pads are channelled so the arms of your glasses slide in comfortably.
Take out the washable lining and hand-wash it in lukewarm water. Clean the shell and visor with a soft cloth and water only — never solvents.
Our team will personally help you choose the right gear or part — around 24h for a reply.