
The facts.
| Model | JP ES 008 |
|---|---|
| Manufacturer | JetPrime |
| Material | CNC-milled Ergal 7075 |
| Fits | Aprilia RSV4 (2021–2026) |
| Installation | Plug-and-play, no wiring harness modifications required |
| Fitment | Aprilia RSV4 (2021–2026) / Aprilia RSV4 Factory (2021–2026) |
| Road approval | None — closed-circuit and race use only |
DescriptionThe whole story▼
The JP ES 008 bridges the RSV4's clutch lever switch so the engine starts with a lever assembly that has none.
Key Features
- Aprilia RSV4 (2021–2026)
- Bridges the clutch lever switch electrically
- The engine starts without the lever pulled
- Plugs into Aprilia's own connector
- For a lever assembly that no longer carries a switch
- Standard switch refits at any time
The Interlock
With a gear selected, the controller needs confirmation that the clutch is disengaged before the starter turns. The lever switch is what provides it.
Race Master Cylinders
Brembo radial units and remote adjusters are among the first changes on a prepared RSV4, and almost none of them carry a factory switch position.
The Result
No starter in gear. In a pit lane, with a bike on a paddock stand and a session about to open, that is the worst possible time to discover it.
Held Closed
This unit keeps the circuit closed permanently so the lever always reads as pulled. Nothing else in the starting strategy is affected.
The Trade
The protection against a lurch on the starter is gone, and the rider carries it instead. That is normal practice on a track bike and unacceptable on a road one.
An Adjustable Chassis
Rake, swingarm pivot and engine position all move on an RSV4, which is why so many end up genuinely set up rather than merely ridden.
One Connector
Aprilia's own plug at the bar, fitted in a minute while the lever assembly is already off.
Nothing Cut
The loom stays exactly as the factory built it and the standard switch refits whenever it needs to.
For a Track Bike
A registered motorcycle should keep the interlock connected.
Reversible
Unplug the bridge and everything returns to standard with nothing left behind.
Three World Superbike Titles
Max Biaggi took Aprilia's first in 2010 and a second in 2012, and Sylvain Guintoli added a third in 2014, all on this engine architecture. The road bike inherited considerably more of that programme than most homologation stories are willing to claim.
Fitment and Compatibility
- Aprilia RSV4 (2021–2026)
Specifications
| Model | JP ES 008 |
|---|---|
| Manufacturer | JetPrime |
| Material | CNC-milled Ergal 7075 |
| Fits | Aprilia RSV4 (2021–2026) |
| Installation | Plug-and-play, no wiring harness modifications required |
What's includedEverything in the box▼
- 1x eliminator
FitmentWhich bikes this fits▼
- Aprilia RSV4 (2021–2026)
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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.
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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.
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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.