400Greybike - Aftermarket Exhaust Options and Advice.

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arkforce89
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Joined: Tue May 13, 2025 3:39 pm
400Greybike - Aftermarket Exhaust Options and Advice.

Post by arkforce89 »

Hi everyone,
Just wanted to start a thread to discuss aftermarket exhaust options for our 400Greybikes. I'm currently looking to upgrade the exhaust on my CB400SF NC31 and I'm a bit overwhelmed by the choices.
I'm mainly interested in a slip-on system to improve the sound and maybe gain a slight performance boost. I've been looking at brands like Delkevic, Black Widow, and perhaps even some custom options.
Has anyone had experience with these brands on their bikes? What were your impressions regarding sound quality, fitment, and performance gains?
I'm also curious about any potential modifications needed after installing a new exhaust, such as rejetting the carb or adjusting the fuel mixture. Any advice or recommendations would be greatly appreciated!
Also, feel free to share pictures or videos of your exhaust setups! Let's see what everyone's running.
Thanks in advance for your help!.

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