Akrapovic exhaust Kawasaki Z900 S-K9SO10-HZT 360° — drag me
2.2 k g
02 · Data & docs

The facts.

Technical data
BrandAkrapovic
Part numberS-K9SO10-HZT
FitmentKawasaki Z900 A2 version (2017–2024)
LineSlip-On Line (Titanium)
MaterialHigh-grade lightweight titanium
Weight2.2 kg (stock 4.2 kg, saving 2.0 kg / 47.6 %)
Power88.1 PS (stock 87.3 PS, gain 0.9 PS at 6,700 rpm)
Torque88.7 Nm (stock 87.6 Nm, gain 1.1 Nm at 6,500 rpm)
Noise insertRemovable insert included
Road approvalEC and ECE type approval, plus EPA
DescriptionThe whole story

This one is for the A2 Z900, not the full-power version. Kawasaki sells a restricted 95 PS variant for A2 licence holders, and Akrapovic measured this exhaust on that machine — 87.3 PS standard, rising to 88.1.

Key Features

  • Developed and measured on the Z900 A2 version
  • 2.2 kg against the standard 4.2 kg: 2.0 kg and 47.6 per cent less
  • Smaller, shorter, conical design aimed at the bike's appearance
  • High-grade lightweight titanium
  • 1.1 Nm more at 6,500 rpm and 0.9 PS at 6,700 rpm
  • Removable noise insert included
  • EC and ECE type approved, plus EPA

Which Z900 Do You Have

The A2 Z900 looks identical to the full-power machine from the outside. The difference is in the ECU and the throttle bodies, and it is recorded in the vehicle documents as 70 kW against 92 kW.

Check the papers rather than the bike. Akrapovic quotes different figures for the two versions, and a rider comparing this page with the full-power one will otherwise be comparing the wrong numbers.

Why the Gains Are Small

An A2 machine is restricted by mapping, not by the exhaust, so opening the exhaust cannot recover what the ECU is holding back. 0.9 PS is what is available, and Akrapovic publishes it rather than quoting the unrestricted bike's numbers.

The 2 kg is the real change. On a restricted machine ridden by a newer rider, weight low on the right-hand side is worth more than a horsepower would be.

Shorter and Conical

Akrapovic describes the shape as smaller, shorter and conical, aimed at improving the bike's appearance. The standard Z900 silencer is a large box, and replacing it with a compact cone changes the rear of the motorcycle more than any other single part.

Not the Full-Power Z900

Akrapovic also builds S-K9SO6-HZT for the unrestricted 2020–2024 Z900. Same years, same-looking bike, different part number and different measured figures.

Ordering the wrong one is easy and the consequence is a silencer developed for a different state of tune. The kilowatt figure in the registration document is what settles it: 70 kW is A2, 92 kW is not.

An Insert Comes With It

The exhaust ships with a removable noise insert. In place, the system stays inside its approved noise figure. Taken out, it no longer matches the condition it was approved in and belongs on a circuit.

Eight Model Years

Kawasaki kept the Z900's exhaust interface unchanged from 2017 to 2024 before the 2025 redesign. One part number covers the whole A2 run, which makes this an easy purchase for a used machine.

Fitment and Compatibility

S-K9SO10-HZT covers the Kawasaki Z900 A2 version from 2017 through 2024. Installation is quoted at 30 minutes.

Specifications

  • Part number: S-K9SO10-HZT
  • EAN: 3831126413729
  • Fitment: Kawasaki Z900 A2 version (2017–2024)
  • Line: Slip-On Line (Titanium)
  • Material: high-grade lightweight titanium
  • Weight: 2.2 kg (stock 4.2 kg, saving 2.0 kg / 47.6 %)
  • Power: 88.1 PS (stock 87.3 PS, gain 0.9 PS at 6,700 rpm)
  • Torque: 88.7 Nm (stock 87.6 Nm, gain 1.1 Nm at 6,500 rpm)
  • Noise insert: removable, included
  • Installation time: approx. 30 minutes
  • Road approval: EC and ECE type approval, EPA
  • Country of manufacture: Slovenia
FitmentWhich bikes this fits
  • Kawasaki Z900 A2 / 95 PS version (2017–2024)
07 · Support

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08 · Paddock

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