JetPrime JP MJ 001 Harley Davidson Softail LOW Rider ST Fxlrst — Memjet EVO power module — view 1 360° — drag me
02 · Data & docs

The facts.

Technical data
ModelJP MJ 001
ManufacturerJetPrime
MaterialCNC-milled Ergal 7075
FitsHarley Davidson Softail LOW Rider ST Fxlrst (2022–2026)
InstallationPlug-and-play, no wiring harness modifications required
DescriptionThe whole story

The JP MJ 001 takes the Softail LOW Rider ST Fxlrst's factory mixture and adds the correction the engine actually wants, without any of the original electronics being reprogrammed.

Key Features

  • Harley Davidson Softail LOW Rider ST Fxlrst (2022–2026)
  • 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 Bagger From the Factory

The ST adds a frame-mounted fairing and hard panniers to the Low Rider S. It is Harley building what customisers had been building for years.

Warranty

A dealer will see an additional module the moment they lift the seat. On a motorcycle still inside its term the sensible course is to unplug it before an appointment, which takes minutes and leaves no trace at all.

Exhaust First, Module Second

If a silencer is going on, fit it first and then the module. Doing it the other way round means judging the effect of two changes at once, which tells the rider nothing useful about either.

Between the Loom and the Injectors

The module is wired in series with the injector circuit, which is the least invasive place to intervene in a modern motorcycle. Everything upstream carries on unaware and everything downstream simply receives a slightly different instruction.

Who Should Not Buy One

An owner with a standard exhaust, a recent motorcycle and no complaint about how it runs. There is no reason to fit a correction to something that is already correct.

The Size of It

A matchbox and a cable. Two hundred grams. There is no motorcycle on which fitting one is a packaging problem, only ones where the seat takes longer to remove.

A Sensible First Modification

It costs less than a set of tyres, takes an evening and can be undone completely. As an entry into modifying an injected motorcycle there are considerably worse places to start.

After a Service

Nothing about the module needs resetting when the motorcycle is serviced. Filters, plugs and oil changes have no interaction with it whatsoever.

Fitment and Compatibility

  • Harley Davidson Softail LOW Rider ST Fxlrst (2022–2026)

Specifications

Model JP MJ 001
Manufacturer JetPrime
Material CNC-milled Ergal 7075
Fits Harley Davidson Softail LOW Rider ST Fxlrst (2022–2026)
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 LOW Rider ST Fxlrst (2022–2026)
07 · Support

Questions, one topic at a time.

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How long does delivery take?

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Yes, we ship to over 130 countries. Prices, taxes and delivery times for your destination are calculated automatically at checkout.

Will I have to pay customs or import duties?

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.

How can I track my order?

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Didn’t find your answer?

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08 · Paddock

Before you go.

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