JetPrime JP ES 044 Kawasaki — SLS/AIS Block-Off Plate — view 1 360° — drag me
02 · Data & docs

The facts.

Technical data
ModelJP ES 044
ManufacturerJetPrime
MaterialCNC-milled Ergal 7075
FitsKawasaki GTR 1400 (2008–2020)
InstallationPlug-and-play, no wiring harness modifications required
FitmentKawasaki GTR 1400 (2008–2020)
Road approvalNone — closed-circuit and race use only
DescriptionThe whole story

The JP ES 044 covers the GTR 1400's air injection opening in the head with a billet cover on an O-ring.

Key Features

  • Kawasaki GTR 1400 (2008–2020)
  • Blanks the secondary air ports in the head
  • Machined from solid aluminium
  • O-ring sealed, no jointing compound
  • Original fastener positions
  • Standard housing refits at any time

Shaft Drive

Nothing to adjust or lubricate, which on a motorcycle intended to cross continents is worth considerably more than the weight it costs.

Three Hundred and Four Kilograms

Wet, which is enormous and carried low enough that the GTR disguises it well above walking pace.

An O-Ring, Not Compound

The joint separates cleanly years later with nothing to scrape from the sealing face, which is not true of anything bedded on jointing paste.

Homologation

The system is part of the motorcycle's approval where it is fitted, and removing it moves the machine into competition use in those markets.

Fitted Cold

There is no reason to attempt this on a warm engine and every reason not to. Aluminium threads and hot castings are a poor combination.

Do the Airbox End Too

An open port in the intake is a worse outcome than the system ever was, so both ends need closing in the same session rather than across two.

What a Cracked Reed Does

It stops sealing in one direction, letting exhaust gas travel back towards the airbox. The residue coats the element and is usually found while chasing something else.

Nothing Structural

The housing carries no load and its removal affects no part of the head's sealing or cooling. It is genuinely a bolt-on component.

A Tourer With a ZZR Heart

The GTR carries a detuned version of Kawasaki's fastest engine, which means it produces the same exhaust characteristics on a trailing throttle as its faster sibling. Owners notice it on long descents.

Twenty-Two Litres

Enough for genuine distance at the speeds a GTR is capable of, which is what separates a tourer from a fast motorcycle with luggage bolted to it.

Fitment and Compatibility

  • Kawasaki GTR 1400 (2008–2020)

Specifications

Model JP ES 044
Manufacturer JetPrime
Material CNC-milled Ergal 7075
Fits Kawasaki GTR 1400 (2008–2020)
Installation Plug-and-play, no wiring harness modifications required
What's includedEverything in the box
  • 1x block-off plate
FitmentWhich bikes this fits
  • Kawasaki GTR 1400 (2008–2020)
07 · Support

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08 · Paddock

Before you go.

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