JetPrime JP ES 009 Aprilia — Rear Brake Light Switch Eliminator — view 1
02 · Data & docs

The facts.

Technical data
BrandJetPrime
Part numberJP ES 009
FunctionDisables the rear brake light switch
TypeRear Brake Light Switch Eliminator
InstallationPlug-and-play, no modification to the original wiring
FitmentAprilia Tuono V4 1100 (2017–2026) / Aprilia Tuono V4 1100 Factory (2019–2026) / Aprilia Tuono V4 1100 RF (2017–2020) / Aprilia Tuono V4 1100 RR (2017–2020)
Road approvalNone — closed-circuit and race use only
DescriptionThe whole story

Fit a Brembo radial master cylinder to a Tuono V4 and you gain feel, adjustment and a part that has no rear brake light switch. The dashboard reads the missing switch as a fault. JP ES 009 disables that circuit cleanly, so the braking upgrade does not come with a permanent warning attached.

Key Features

  • For the Tuono V4 1100 and 1100 Factory, 2017 through 2026
  • Disables the rear brake light switch circuit
  • Makes an aftermarket Brembo braking system usable without a switch
  • Removes the associated dashboard error
  • Plug-and-play, no wiring changes
  • Reversible if the standard system goes back on

The Upgrade Nobody Warns You About

Braking hardware is the most common upgrade on a Tuono, and the rear master cylinder is where the switch lives. Aftermarket units are built for race use, where a brake light is irrelevant, so they simply do not carry the switch. The result is a bike that brakes better and complains about it every time the ignition is turned on. This eliminator is the missing half of that upgrade.

Fitment and Compatibility

  • Aprilia Tuono V4 1100 (2017–2026)
  • Aprilia Tuono V4 1100 Factory (2019–2026)

Road Approval

None. A motorcycle whose brake light does not operate is not road legal. Closed-circuit and competition use only.

Fitting It

The rear brake light switch on the Tuono is a pressure or plunger switch at the rear master cylinder. Unplug it, fit the eliminator to the loom connector, and route it up under the tail. No calibration, no bleeding required beyond whatever the brake work itself needs.

Front and Rear Are Separate

This eliminator covers the rear circuit. The front brake light switch is a different component on a different connector, and swapping the front master cylinder raises the same problem again. Check which end of the bike your upgrade actually affects before ordering — the two are not interchangeable.

Specifications

  • Brand: JetPrime
  • Part number: JP ES 009
  • Type: Rear brake light switch eliminator
  • Function: disables the rear brake light switch circuit
  • Installation: plug-and-play, no modification to the original wiring
  • Fitment: Aprilia Tuono V4 1100 / Factory (2017–2026)
  • Road approval: none — closed-circuit and race use only
FitmentWhich bikes this fits
  • Aprilia Tuono V4 1100 (2017–2026)
  • Aprilia Tuono V4 1100 Factory (2019–2026)
  • Aprilia Tuono V4 1100 RF (2017–2020)
  • Aprilia Tuono V4 1100 RR (2017–2020)
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