JetPrime JP ES 033 Yamaha — SLS/AIS Block-Off Plate — view 1 360° — drag me
02 · Data & docs

The facts.

Technical data
BrandJetPrime
Part numberJP ES 033
FunctionCNC-machined cover plate
TypeSLS/AIS Block-Off Plate
InstallationPlug-and-play, no modification to the original wiring
FitmentYamaha XJ6 (2009–2015)
Road approvalNone — closed-circuit and race use only
DescriptionThe whole story

The XJ6 was the sensible, affordable four that Yamaha sold to riders who wanted a motorcycle rather than a statement. The ones still running are maintained on a budget, and sealing the secondary air port permanently fits that approach.

Key Features

  • For the Yamaha XJ6, 2009–2015
  • CNC-machined aluminium plate with gasket
  • Replaces ageing reed valve housings for good
  • Fits the original threads
  • Works with the electronic solenoid eliminator
  • Reversible if the bike goes back to standard

A Budget Bike, Maintained Cheaply

Nobody spends heavily on an XJ6. The owners keeping them on the road are looking for repairs that stay repaired, and a sealed port does not need revisiting the way a set of tired reed valves does. That is the argument for this part on this motorcycle, and it is a different argument from the one made on a race bike.

Sourcing at This Age

Yamaha reed valve assemblies for a bike now well over a decade old are increasingly a special order with a wait attached. Removing the need for them entirely sidesteps that, which matters when the part costs a noticeable fraction of what the bike is worth.

Shared With the FZ8

The XJ6 and the FZ8 take the same plate, despite different capacities and very different characters. The cylinder head geometry at this point is common to both.

Fitment

  • Yamaha XJ6 (2009–2015)

Road Approval

None. Closed-circuit and race use only.

Specifications

  • Brand: JetPrime
  • Part number: JP ES 033
  • Type: SLS/AIS Block-Off Plate
  • Function: Seals the secondary air port in the cylinder head
  • Installation: on the original mounting points, no drilling
  • Fitment: Yamaha XJ6 (2009–2015)
  • Road approval: none — closed-circuit and race use only
FitmentWhich bikes this fits
  • Yamaha XJ6 (2009–2015)
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08 · Paddock

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