JetPrime JP ES 028 Suzuki — SLS/AIS Block-Off Plate — view 1 360° — drag me
02 · Data & docs

The facts.

Technical data
BrandJetPrime
Part numberJP ES 028
FunctionCNC-machined cover plate
TypeSLS/AIS Block-Off Plate
InstallationPlug-and-play, no modification to the original wiring
FitmentSuzuki GSR750 (2011–2016)
Road approvalNone — closed-circuit and race use only
DescriptionThe whole story

The GSR750's cylinder head takes JP ES 028, a machined aluminium plate that replaces the reed valve housings permanently. On a bike now a decade old, that is one maintenance item deleted rather than deferred.

Key Features

  • For the Suzuki GSR750, 2011–2016
  • Machined aluminium plate with gasket
  • Replaces ageing reed valve housings for good
  • Original mounting points
  • Works with the JP ES 007 eliminator
  • Standard parts refit if wanted

Check the Part Number, Not the Brand

Suzuki uses at least two different secondary air port geometries across the models in this range. The GSR750 takes JP ES 028, shared with the GSX-S family; the newer 776 cc twins take JP ES 049 and will not accept this plate. Both are Suzuki, both are called a block-off plate, and they are not interchangeable.

On Show

The GSR is a naked bike with the top of its engine in plain view once the tank is up, and anyone who has taken the airbox off has looked at that area properly. A machined plate sitting where the reed valve housings were reads as deliberate. It is a small thing, but it is the difference between a bike that was worked on and one that was bodged.

Torque It Properly

The plate bolts into threads in an aluminium cylinder head, and those threads are not forgiving. This is a low-torque fastening — the gasket does the sealing, not the clamping force — and overtightening it is the one way to turn a straightforward job into an expensive one.

Fitment

  • Suzuki GSR750 (2011–2016)

Road Approval

None. Closed-circuit and race use only.

Specifications

  • Brand: JetPrime
  • Part number: JP ES 028
  • 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: Suzuki GSR750 (2011–2016)
  • Road approval: none — closed-circuit and race use only
FitmentWhich bikes this fits
  • Suzuki GSR750 (2011–2016)
07 · Support

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08 · Paddock

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