⟲ 360° — drag meThe facts.
| Brand | Akrapovic |
|---|---|
| Part number | E-K10R6 |
| Fitment | Kawasaki Z H2 and Z H2 SE (2020–2023) |
| Part type | Optional header — requires an Akrapovic slip-on |
| Material | Finest stainless steel |
| Weight | 4.0 kg (stock 6.7 kg, saving 2.7 kg / 40.3 %) |
| Power | 188.8 PS (stock 179.1 PS, gain 10.9 PS at 11,200 rpm) |
| Torque | gain 6.2 Nm at 6,800 rpm |
| ECU | Remapping recommended |
| Road approval | None — track use only |
DescriptionThe whole story▼
Two point seven kilograms out of the lowest part of a 239 kg motorcycle. The Z H2 is the heaviest bike Kawasaki builds around its supercharged four, and the standard header assembly under the engine accounts for 6.7 kg of that.
Key Features
- Header assembly down to 4.0 kg — Kawasaki's own weighs 6.7
- Output climbs to 188.8 PS, measured 10.9 above standard at 11,200 rpm
- Torque up by 6.2 Nm, measured at 6,800 rpm
- Built entirely from Akrapovic's finest stainless steel
- Completes an Akrapovic slip-on into a full racing system
- A fresh ECU map is recommended, not optional in practice
- No road approval — circuit use only
Which Kawasaki Is Yours
Kawasaki builds three motorcycles around the supercharged 998 cc four: the faired H2, the H2 SX sports tourer and the naked Z H2. They are not interchangeable, and this header is for the Z H2 alone.
The Z H2 SE, with Brembo Stylema brakes and Showa Skyhook electronic suspension, shares the engine and the exhaust route and takes the same part.
Why the Remap Is Not Optional Advice
Akrapovic recommends remapping for performance, throttle response and durability. On a forced-induction engine, that third word is the one to read twice: a lean mixture under boost damages hardware in a way it does not on a naturally aspirated motor.
Treat the dyno session as part of the purchase price rather than as something to weigh up afterwards.
Ninety Minutes, and Why It Is Not Longer
The supercharger sits behind the cylinders and drives off the crankshaft, so it is not in the way of the exhaust ports. The header comes out from below with the belly section removed — an hour and a half of workshop time, which is short for a header on a bike this densely packed.
A Used Motorcycle Now
Kawasaki introduced the Z H2 in 2020 and revised it for Euro 5+ in 2024. Machines from the first four years are used bikes today, past their steepest depreciation, which changes the calculation on a track-only part: there is less to lose and the motorcycle is more likely to see a circuit.
What the Slip-On Cannot Do Alone
A slip-on replaces the silencer and leaves the catalytic converter and the header assembly in place. On a Z H2 that means the largest restriction in the system stays exactly where it was, which is why the slip-on's own figures are modest and the header's are not.
Fitted together the two form a complete exhaust from the cylinder head back, and that is the combination Akrapovic measured.
Stainless Rather Than Titanium
Akrapovic uses steel for this header and not titanium, which on a part that saves 2.7 kg looks like a missed opportunity until you consider where it lives. A header sits directly under the engine, in the path of every stone the front wheel throws, and steel takes that.
Fitment and Compatibility
E-K10R6 covers the Kawasaki Z H2 and Z H2 SE from 2020 through 2023. Machines from 2024 take E-K10R8, which is a separate part — Kawasaki changed the lambda sensor arrangement for Euro 5+. It requires an Akrapovic slip-on to complete the system.
Road Approval
None. This product does not meet emission compliance requirements for street or highway use.
Specifications
- Part number: E-K10R6
- EAN: 3831113587525
- Bikes covered: Kawasaki Z H2 and Z H2 SE, model years 2020 to 2023
- Type of part: optional header section
- Made of: stainless steel throughout
- Weight: 4.0 kg, against 6.7 kg standard — 2.7 kg saved, 40.3 %
- Power: 188.8 PS, from 179.1 standard — plus 10.9 measured at 11,200 rpm
- Torque: plus 6.2 Nm, measured at 6,800 rpm
- Needs an Akrapovic slip-on alongside it
- ECU: remapping recommended
- Workshop time: about an hour and a half
- Approval: none at all; closed circuits only
- Country of manufacture: Slovenia
FitmentWhich bikes this fits▼
- Kawasaki Z H2 and Z H2 SE (2020–2023)
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Measure your head circumference about one centimetre above your eyebrows and compare it with the size chart on this page. Between sizes? Choose the smaller one — the padding beds in with use.
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Most of our touring and sport helmets are Pinlock-ready and many include the insert. Check the ‘What’s in the box’ section on this page for this model.
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Take out the washable lining and hand-wash it in lukewarm water. Clean the shell and visor with a soft cloth and water only — never solvents.
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