⟲ 360° — drag meThe facts.
| Model | JP MJ 004 |
|---|---|
| Manufacturer | JetPrime |
| Material | CNC-milled Ergal 7075 |
| Fits | BMW R1250RS (2018–2023) |
| Installation | Plug-and-play, no wiring harness modifications required |
DescriptionThe whole story▼
The JP MJ 004 sits between the R1250RS's loom and its injectors and adjusts how long each one stays open, which is the whole of what a power module does.
Key Features
- BMW R1250RS (2018–2023)
- 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
The Later Sports Tourer
ShiftCam gave the RS a stronger midrange, which is exactly what a motorcycle used for fast road riding wants from a two-cylinder engine.
Type Approval
In markets where the fuelling forms part of the motorcycle's emissions approval, altering it puts the machine outside its approved condition. That is a legal question rather than an engineering one and it is worth settling locally.
A Second Rider
Carrying a passenger loads the engine differently and exposes lean cruise settings more clearly. Owners who tour two-up frequently notice the difference before owners who ride alone do.
The Limits of a Module
It cannot repair a mechanical fault, cannot raise a rev limit and cannot alter ignition timing. Everything it does is fuel quantity, which is a narrow tool used precisely.
Warm-Up Belongs Elsewhere
The enrichment a cold engine needs comes from the standard controller reading its own temperature sensor. A module does not participate in that and cannot improve it.
Sequence With an Exhaust
Fit the silencer, ride it, then fit the module. Two changes at once tell the rider nothing about either, and the exhaust is the one that moves the mixture furthest.
A Long-Lived Component
There is nothing in it that ages: no relay, no moving part and no user setting to drift. Fitted properly it will outlast several sets of tyres without being thought about.
Vibration Is the Real Enemy
Electronics on a motorcycle fail from being shaken rather than from being wet. A body secured properly against a flat surface outlives one hanging on its own cable by years.
Fitment and Compatibility
- BMW R1250RS (2018–2023)
Specifications
| Model | JP MJ 004 |
|---|---|
| Manufacturer | JetPrime |
| Material | CNC-milled Ergal 7075 |
| Fits | BMW R1250RS (2018–2023) |
| Installation | Plug-and-play, no wiring harness modifications required |
What's includedEverything in the box▼
- 1x power module
FitmentWhich bikes this fits▼
- BMW R1250RS (2018–2023)
Questions, one topic at a time.
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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.