⟲ 360° — drag meThe facts.
| Model | JP KS DU021 |
|---|---|
| Manufacturer | JetPrime |
| Material | CNC-milled Ergal 7075 |
| Fits | Ducati Streetfighter V4S (2020–2024) |
| Installation | Plug-and-play, no wiring harness modifications required |
DescriptionThe whole story▼
The JP KS DU021 is the kill switch listed for the Streetfighter V4S, model-specific down to the plate shape and the connector the loom expects.
Key Features
- Ducati Streetfighter V4S (2020–2024)
- Replaces the original ignition block, key and lock
- Around 350 g off the top yoke
- CNC-machined from solid Ergal
- IP69K sealed push button
- Plug-and-play on the motorcycle's own connector
Semi-Active and Naked
The S brings electronic suspension and forged wheels to a motorcycle that already had more power than most riders can use. Track days are where it makes sense.
Check the Immobiliser First
Where the key carries a transponder, the ring around the barrel is part of the starting circuit. That has to be settled before the barrel comes off.
Where the Weight Sits
High and forward, above the steering head. Mass in that position works against the rider on every direction change, which is why the figure is worth more than it looks.
On the Top Yoke
The plate follows the yoke's shape on most models, which is why the part number changes even between bikes that look similar.
The Weight, Honestly
Three hundred and fifty grams will not be felt on a lap time. What it does is take mass off the steering head, which is the best place to lose it.
A Visible Change
It sits in the middle of the cockpit where the rider looks. That is part of why owners buy it and there is no point pretending otherwise.
Threads in Aluminium
The yoke is cast and the fasteners are small. The specified torque is low and exceeding it is the one way this job goes wrong.
US Market Bikes
A few models carry a separate number for the American specification, because the ignition circuit there is arranged differently.
Between Sessions
The bike sits armed or dead depending on one press. There is nothing hanging out of the yoke to catch a glove or a knee.
The Fitting, Start to Finish
Tank or cover off to reach the loom, the ignition connector unplugged, two fasteners out of the top yoke, the block lifted away and the new body bolted into the same holes. Twenty minutes on most machines and no part of it needs the front end disturbed.
Fitment and Compatibility
- Ducati Streetfighter V4S (2020–2024)
Specifications
| Model | JP KS DU021 |
|---|---|
| Manufacturer | JetPrime |
| Material | CNC-milled Ergal 7075 |
| Fits | Ducati Streetfighter V4S (2020–2024) |
| Installation | Plug-and-play, no wiring harness modifications required |
What's includedEverything in the box▼
- 1x handlebar switch
FitmentWhich bikes this fits▼
- Ducati Streetfighter V4S (2020–2024)
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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.