⟲ 360° — drag meThe facts.
| Model | JP MJ 013 |
|---|---|
| Manufacturer | JetPrime |
| Material | CNC-milled Ergal 7075 |
| Fits | Yamaha R3 (2015–2024) |
| Installation | Plug-and-play, no wiring harness modifications required |
DescriptionThe whole story▼
The JP MJ 013 sits between the R3'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
- Yamaha R3 (2015–2024)
- 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
Where Racers Start
Yamaha's 321 cc twin has carried more riders into their first season than almost anything else. Its mapping is conservative and responds to change.
The Honest Summary
A sealed, preset module that makes an injected engine smoother where the factory had to be careful, fitted in an evening and removed in a minute. It is a narrow product and it does not pretend to be anything else.
Weight and Space
Two hundred grams and a body about the size of a matchbox. On most motorcycles the harder part is finding somewhere tidy for the cable rather than for the module.
Selling the Motorcycle
The module comes off in minutes and goes with the bike or stays with the owner. Either way the machine on offer is a standard one, which suits most buyers.
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.
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.
Buying Second Hand
A motorcycle offered with one fitted should come with the original connectors intact underneath. Checking that takes a minute with the seat off and settles whether anything was cut.
Not a Cure for Age
An engine with worn valve guides or low compression runs badly for mechanical reasons. Adding fuel masks a symptom and delays a repair that will only get more expensive.
Fitment and Compatibility
- Yamaha R3 (2015–2024)
Specifications
| Model | JP MJ 013 |
|---|---|
| Manufacturer | JetPrime |
| Material | CNC-milled Ergal 7075 |
| Fits | Yamaha R3 (2015–2024) |
| Installation | Plug-and-play, no wiring harness modifications required |
What's includedEverything in the box▼
- 1x power module
FitmentWhich bikes this fits▼
- Yamaha R3 (2015–2024)
Questions, one topic at a time.
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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.