⟲ 360° — drag meThe facts.
| Model | JP MJ 001 |
|---|---|
| Manufacturer | JetPrime |
| Material | CNC-milled Ergal 7075 |
| Fits | Harley Davidson Softail FAT BOB Fxfb/s (2018–2022) |
| Installation | Plug-and-play, no wiring harness modifications required |
DescriptionThe whole story▼
The JP MJ 001 improves the Softail FAT BOB Fxfb/s's throttle response and smoothness, which is the manufacturer's claim in full and a considerably more honest one than most.
Key Features
- Harley Davidson Softail FAT BOB Fxfb/s (2018–2022)
- 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 Milwaukee-Eight
Harley's 2017 engine brought four valves per cylinder and a single camshaft, which improved breathing more than any change in decades.
Fuel Consumption
Expect no meaningful change. A richer cruise setting costs a little and a smoother throttle hand saves a little, and in practice the two cancel. Nobody should buy this expecting to notice anything at the pump.
Plug and Play, Literally
The harness ends in the connectors the motorcycle already uses. They separate, the module goes in between and they close again. Nobody needs a wiring diagram and nobody needs to strip insulation.
Not a Rider Aid
Traction control, wheelie control and engine braking strategy are all decided upstream by the standard controller and are unaffected. The module is invisible to them.
Reading the Fault Memory
Untouched electronics report honestly. On a machine with a flashed controller a diagnostic session is a negotiation; on one with a module it is simply a diagnostic session.
Cold Starts Are Not the Target
Warm-up enrichment is separate, standard and untouched. A machine that has always been reluctant on a January morning will remain exactly as reluctant.
Not an Exhaust Substitute
A module changes fuelling, not gas flow. Riders hoping for the noise or the weight saving of an aftermarket silencer will be disappointed, because it does neither of those things.
On a Twin Versus a Four
A large twin with widely spaced firing pulses shows lean fuelling more obviously than a smooth four does. Owners of vee twins and parallel twins tend to notice more.
Fitment and Compatibility
- Harley Davidson Softail FAT BOB Fxfb/s (2018–2022)
Specifications
| Model | JP MJ 001 |
|---|---|
| Manufacturer | JetPrime |
| Material | CNC-milled Ergal 7075 |
| Fits | Harley Davidson Softail FAT BOB Fxfb/s (2018–2022) |
| Installation | Plug-and-play, no wiring harness modifications required |
What's includedEverything in the box▼
- 1x power module
FitmentWhich bikes this fits▼
- Harley Davidson Softail FAT BOB Fxfb/s (2018–2022)
Questions, one topic at a time.
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We’re based in Germany. Standard delivery goes by DHL and national postal services and takes about 2–5 days within Germany, 1–2 weeks within the EU and 2–6 weeks outside the EU. Need it sooner? Express delivery reaches most of the world within a few days — just choose it at checkout where available.
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Within the EU, no — our prices already include all duties and EU VAT. For deliveries outside the EU (e.g. Switzerland, the UK or the USA), your order may be subject to import duties and taxes set by your country. These are collected by the carrier when your parcel arrives, aren’t included in our prices, and are outside our control.
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Yes. We’re an authorised dealer, so every product is 100% original and comes with the full manufacturer warranty.
Yes. Everything we sell is genuine and comes with the manufacturer’s warranty, on top of your statutory rights. Keep your invoice as proof of purchase and contact us if you ever need to make a claim — we’ll help you through it.
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.