⟲ 360° — drag meThe facts.
| Model | JP MJ 008 |
|---|---|
| Manufacturer | JetPrime |
| Material | CNC-milled Ergal 7075 |
| Fits | Yamaha R1 (2007–2025) |
| Installation | Plug-and-play, no wiring harness modifications required |
DescriptionThe whole story▼
The JP MJ 008 is the fuel module JetPrime lists for the R1, supplied with model-specific wiring and fitted in an evening with no special tools.
Key Features
- Yamaha R1 (2007–2025)
- 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
The Crossplane Crankshaft
Yamaha borrowed the firing order from their MotoGP machine, which removes the inertial torque spikes an inline four normally produces and changes how the engine picks up.
Diagnostics Still Work
Because nothing is written to the original controller, the service history stays readable and any fault the motorcycle develops is reported normally. A masked fault memory is one of the real costs of the alternatives.
Not a Racing Part
There is no adjustment, no logging and no way to tailor the curve to one circuit. Riders who want that need the programmable unit, and JetPrime sells one alongside this.
The Case Against Buying It
A late model motorcycle with the standard exhaust, ridden gently, is already mapped about as well as it needs to be. The honest advice there is to spend the money on tyres.
Two Products, One Catalogue
JetPrime sells this alongside a programmable unit at a considerably higher price. The choice is between a curve somebody else worked out and a curve the owner works out themselves.
Riding at Part Throttle
Which is nearly all riding. A change confined to the first quarter of travel sounds minor and is felt constantly, which is the opposite of how most tuning parts work.
Track Days
On a circuit the throttle is either shut or open and the transition matters less than it does on a road. Riders who only ride circuits will notice this module least.
Model Years Matter
Manufacturers revise injection hardware more often than they revise engines. Two motorcycles that look identical can need different harnesses, which is why the listing names years.
Fitment and Compatibility
- Yamaha R1 (2007–2025)
- Covers the R1 Gytr versions of this model
Specifications
| Model | JP MJ 008 |
|---|---|
| Manufacturer | JetPrime |
| Material | CNC-milled Ergal 7075 |
| Fits | Yamaha R1 (2007–2025) |
| Installation | Plug-and-play, no wiring harness modifications required |
What's includedEverything in the box▼
- 1x power module
FitmentWhich bikes this fits▼
- Yamaha R1 (2007–2025)
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