⟲ 360° — drag meThe facts.
| Model | JP MJ 008 |
|---|---|
| Manufacturer | JetPrime |
| Material | CNC-milled Ergal 7075 |
| Fits | Yamaha XSR900 (2016–2025) |
| Installation | Plug-and-play, no wiring harness modifications required |
DescriptionThe whole story▼
The JP MJ 008 plugs into the XSR900's injector harness on its own connectors, leaving the loom untouched and the whole change reversible in a minute.
Key Features
- Yamaha XSR900 (2016–2025)
- 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
A Retro CP3
Yamaha wrapped the triple in nineteen eighties bodywork and softened the first part of the throttle travel. It is the same engine with better manners.
Cold Starting Is Untouched
Warm-up enrichment is a function of the standard controller and the module does not interfere with it. A motorcycle that started badly before will start exactly as badly afterwards, because that is a different problem entirely.
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.
Lambda Control Is Not Bypassed
The module works with the oxygen sensor loop rather than around it. Nothing is disconnected, spoofed or hidden, which is one reason the fault memory stays clean.
Dealers and Terms
It unplugs in minutes. Owners inside a warranty period generally remove it before an appointment and refit it afterwards, and the connectors are designed to tolerate that repeatedly.
No Procedure Afterwards
Nothing to pair, calibrate or reset. The engine is started and the correction is already in place, which is unusual enough among electronic parts to be worth stating.
On a Motorcycle With Two Owners
A shared machine ridden by somebody who does not know the module is there will notice nothing at all. It changes nothing about how the motorcycle is operated, only how it responds.
Documentation
There is very little of it, because there is very little to say. A wiring position, a warning about heat and a note about reversibility covers everything an owner needs.
Fitment and Compatibility
- Yamaha XSR900 (2016–2025)
Specifications
| Model | JP MJ 008 |
|---|---|
| Manufacturer | JetPrime |
| Material | CNC-milled Ergal 7075 |
| Fits | Yamaha XSR900 (2016–2025) |
| Installation | Plug-and-play, no wiring harness modifications required |
What's includedEverything in the box▼
- 1x power module
FitmentWhich bikes this fits▼
- Yamaha XSR900 (2016–2025)
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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.