Nucular P24F Goes Cross-Platform: Apollo RFN & Arctic Leopard Upgrade Kits
The stock controller is the bottleneck
Light electric motorcycles ship with controllers chosen for cost, thermal safety margin and regulatory compliance. The motor and the frame are usually capable of more than the factory electronics will allow. That gap is why controller upgrades are the single most effective change you can make to one of these bikes.
We have offered Nucular P24F Plug and Ride kits for Sur-Ron and Talaria for a while. The range now covers two more platforms: Apollo RFN and Arctic Leopard.
What Plug and Ride means
These are not generic controllers with a bag of connectors. Each kit connects to the bike's standard wiring in place of the factory controller, using a harness built for that specific platform. You are not splicing into a loom or fabricating adapters.
Every kit is built around the Nucular P24F: intelligent FOC, 48V to 78V, 27kW maximum power. The kit-specific part is the wiring and the tune.
Apollo RFN kit — $830
The Apollo RFN upgrade kit fits three versions:
- RFN RS Road (L1E)
- RFN RS Endurance (L1E)
- RFN Rally Pro
On the stock battery, maximum power is 12kW. That figure is worth reading carefully — the controller is rated to 27kW, but on a factory pack the battery is the limit, not the controller. The stock cells can only deliver so much current regardless of what is asking for it.
The practical implication: 12kW on the stock pack is a very large step up from factory, and if you later upgrade the battery, the controller has headroom left. You are not buying a part you will outgrow.
Arctic Leopard kit — $800
The Arctic Leopard upgrade kit is a wiring kit for the EXT500, EXT600 and EXT800 in off-road and trial versions. Like the Apollo kit, it connects to the standard wiring in place of the factory controller.
Arctic Leopard is a newer platform in the US market and aftermarket support is still thin, which is exactly why a properly engineered plug-in option matters here.
The rest of the range
If you are on a different platform, the same approach is available:
- Sur-Ron Light Bee / Segway X260 — $850. On the stock Sur-Ron or Segway battery this adds roughly 2,000W, or 20–30% more acceleration.
- Talaria Sting / MX3 / MX4 / MX5 — $850. Up to 30% more power on the standard 60V battery, and up to 300% on a 72V battery for MX3 and MX4.
- Talaria XXX — $825. Up to 30% more on the standard 60V pack, up to 300% on 72V.
- E-Ride Pro SS 2.0 and 3.0 — $850. Up to 13kW on the stock battery.
The pattern in those numbers
Notice how much the gain depends on the pack rather than the controller. The Talaria figures tell the story clearly: up to 30% more power on a 60V battery, up to 300% on 72V. Same controller, same kit — wildly different outcome depending on what is feeding it.
If you are planning an upgrade path, the controller is the right first step because it is what unlocks a better pack later. Doing it the other way round — a big battery into a stock controller — gets you much less, because the factory controller will simply refuse to draw the current.
Before you order
Check your exact model and variant against the kit listing. These platforms have close-named versions with different harnesses, and the L1E road-legal versions differ from the off-road ones. If you are unsure which you have, send us the details and we will confirm before you buy.
Also worth knowing: every P24F needs either the Nucular On-Board Computer display or the Bluetooth module to configure. Factor that into the budget if you do not already have one.
And the obvious point that is still worth making: these kits substantially increase what the bike can do. Brakes, tyres and suspension that were adequate at factory power may not be at double it.
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