⟲ 360° — drag meThe facts.
| Model | JP MJ 004 |
|---|---|
| Manufacturer | JetPrime |
| Material | CNC-milled Ergal 7075 |
| Fits | BMW R1200R (2004–2018) |
| Installation | Plug-and-play, no wiring harness modifications required |
DescriptionThe whole story▼
The JP MJ 004 answers the flat spot a lean cruise setting gives the R1200R, and does it without disturbing ignition timing or any rider aid.
Key Features
- BMW R1200R (2004–2018)
- 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 Naked Boxer
Take the fairing and the screen off a GS and the same engine feels quite different, because the rider is now the aerodynamic load rather than the bodywork.
The Lambda Sensor Keeps Working
At small openings the controller still trims the mixture against the oxygen sensor, which means the module works alongside that loop rather than fighting it. At larger openings the sensor drops out and the module's correction is what remains.
The Closed Loop Window
Modern controllers only trim against the oxygen sensor in a narrow band of load and revs. Outside that band the map runs open loop, and that is exactly where an added correction has room to work.
Small Openings Matter Most
Almost all road riding happens in the first quarter of throttle travel. A change there is felt on every corner exit and in every roundabout, which is why response is a better sales argument than peak power.
One Harness Per Motorcycle
The connectors differ between models and sometimes between years of the same model. That is why this is sold per machine and why the year span in the listing is worth reading before ordering.
What Improves First
Pick-up from a closed throttle. Almost every owner mentions it before anything else, because it happens dozens of times on any ride and is the most irritating thing a lean map produces.
Two Up and Loaded
A pillion and luggage put the engine at higher load for the same throttle opening, which moves the operating point into a different part of the map and often exposes it.
The Emissions Cycle in Practice
The test runs at defined speeds and loads, and manufacturers naturally pay closest attention to those cells. A rider who spends time in exactly those cells feels the compromise most.
Fitment and Compatibility
- BMW R1200R (2004–2018)
Specifications
| Model | JP MJ 004 |
|---|---|
| Manufacturer | JetPrime |
| Material | CNC-milled Ergal 7075 |
| Fits | BMW R1200R (2004–2018) |
| Installation | Plug-and-play, no wiring harness modifications required |
What's includedEverything in the box▼
- 1x power module
FitmentWhich bikes this fits▼
- BMW R1200R (2004–2018)
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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.