⟲ 360° — drag meThe facts.
| Brand | JetPrime |
|---|---|
| Part number | JP SPK 024 (black) |
| Function | Ignition block replacement kill switch button |
| Material | Solid-machined Ergal (7075 aluminium) |
| Button protection | IP69K |
| Weight saved | Approximately 350 g versus the standard ignition block |
| Supplied with | Key Box for the original key and immobiliser antenna |
| Installation | Plug-and-play, fully reversible, no loom modification |
| Fitment | Kawasaki Ninja 400 (2018–2024) |
| Road approval | None — closed-circuit and race use only |
DescriptionThe whole story▼
The Ninja 400 is the backbone of SuperSport 300 racing, and a large share of those bikes run Mectronik engine management rather than the Kawasaki original. The JP SPK 024 is the kill switch for that configuration — same idea as the standard part, different connector.
Key Features
- For Ninja 400 race bikes running a Mectronik ECU and loom
- Deletes the ignition block, barrel and key
- About 350 g off the top of a machine that is already light
- Machined Ergal housing with an IP69K push button
- Plugs into the Mectronik ignition connector — no adaptation
- Built for a bike that stays on a trailer between meetings
Which Switch for Which Bike
JetPrime lists two Ninja 400 kill switches. The standard part suits a bike on its original Kawasaki loom; this SuperSport version suits a bike converted to Mectronik. The physical switch is the same, the harness end is not, and ordering the wrong one means a part that will not connect. The ECU under the seat is the quickest way to tell them apart.
Grams on a 400
Three hundred and fifty grams sounds slight until you set it against a bike that weighs under 170 kg wet and races in a class where everyone is on the same machine. It comes off the steering head, the single worst place on a motorcycle to carry weight, and it comes off for the price of a part you were going to remove anyway.
Fitment and Compatibility
- Kawasaki Ninja 400 with Mectronik management (2018–2024)
Road Approval
None. This is a competition part for a race-prepared motorcycle and is sold for closed-circuit use only.
Between Sessions
The practical case for deleting the barrel on a race 400 is mostly about time. No key to find, nothing to leave in the ignition, nothing to seize after a wet meeting. The switch is sealed to IP69K, so it can be jet-washed with the rest of the bike rather than worked around, and there is no lock cylinder to dry out afterwards.
Specifications
- Brand: JetPrime
- Part number: JP SPK 024 (black)
- Function: ignition block replacement kill switch button
- Material: solid-machined Ergal (7075 aluminium)
- Button protection: IP69K
- Weight saved: approximately 350 g versus the standard ignition block
- Supplied with: Key Box for the original key and immobiliser antenna
- Installation: plug-and-play, fully reversible, no loom modification
- Fitment: Kawasaki Ninja 400 Mectronik (2018–2024)
- Road approval: none — closed-circuit and race use only
FitmentWhich bikes this fits▼
- Kawasaki Ninja 400 (2018–2024)
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