2025+ US-spec Z900 breadbox delete — Has anyone found a proper mid-pipe yet?
I have a 2026 Kawasaki Z900 SE, US-spec, with the Akrapovič carbon slip-on that was installed by the dealer.
I’m looking to improve the exhaust sound, and I’m interested in doing a breadbox delete while keeping the stock headers and catalytic converter.
I know this was a pretty common mod on the previous-gen Z900, but from what I’ve found, the 2025+ exhaust is different. Apparently the pipe diameter around the cat section is larger than on the 2017–2024 models, so the older ebay breadbox-delete mid-pipes don’t fit correctly. I’ve seen people mention expanding the old mid-pipes, modifying them, or just welding something custom.
So my main question is:
Does anyone know of a mid-pipe specifically made for the 2025+ US-spec Z900 that deletes the breadbox but keeps the factory catalytic converter?
Just to be clear before the inevitable “just get full headers and tune it” comments:
I am not trying to gain horsepower or maximize performance.
I understand that if the goal were power, the better route would probably be full headers, cat delete, ECU tune, etc. That is not what I’m trying to accomplish.
I don’t want to spend the money on a full exhaust system and then another $300–400+ on an ECU tune just to get more exhaust volume.
If anyone has already done this on a 2025 or 2026 US Z900, I’d really appreciate:
- What mid-pipe you used
- The pipe diameter
- Whether it was truly bolt-on or needed modification
Photos or links would be greatly appreciated.
