HONDA CB400 VTEC SLIP-ON EXHAUST SYSTEM (2008+)
Wake the Inline Four
The stock CB400 exhaust might look okay from a distance, but once you hear it, there’s no mistaking it: tinny, restricted, and far too quiet for a bike that revs to the moon. Swapping the stock system for one of our high-performance slip-ons transforms both the tone and the styling of the bike. With a deeper, throatier note and up to 3hp gain in peak performance, this system helps bring the inline four to life while trimming up to 3.5kg off the rear end.
Performance & Sound
Our slip-on systems dramatically improve mid-range torque while delivering that crisp, aggressive tone these VTEC-powered motors are known for. Whether you're chasing smoother pull through the revs or just want to be heard in traffic, the results are instant—and addictive.
Muffler Options
The Flanker
A modern stainless and carbon-fibre slip-on with removable baffle, giving you the option to tone things down or run it raw. Finished with our mesh grille and carbon end-cap.
The Mutt
Our favourite for the CB400 platform, the Mutt has no baffle, an aggressive tone, and a raw, vintage-racer edge. Constructed with a full carbon fibre shell and 304 stainless internals, it’s featherlight at just 700g, and absolutely howls once VTEC kicks in.
Materials & Construction
Both systems are built using 304 stainless steel collector pipes, premium welds, and include a spring-mounted connection, clamp, and high tensile 316 stainless mounting hardware. These are built to last, with proper weight savings and durability where it counts.
Fitment & Installation
Fitment: CB400 VTEC models (NC39 / NC42 platforms)
Install time: Under 10 minutes with basic hand tools
No tuning or ECU flash required—bolt it on and enjoy
Each kit includes:
Collector pipe
Muffler (Flanker or Mutt)
Baffle (Flanker only)
Springs, clamp, fasteners
Spring puller tool
Why Choose Us
Proven performance gains and aggressive tone
Modular muffler options to suit your taste
Lightweight construction with premium materials
Fast, DIY install—no tuning required
Built to last with stainless and carbon construction
If you’d like help selecting the right muffler for your build—or want to chat through custom requests—just shoot us an email and we’ll be happy to help.
Wake the Inline Four
The stock CB400 exhaust might look okay from a distance, but once you hear it, there’s no mistaking it: tinny, restricted, and far too quiet for a bike that revs to the moon. Swapping the stock system for one of our high-performance slip-ons transforms both the tone and the styling of the bike. With a deeper, throatier note and up to 3hp gain in peak performance, this system helps bring the inline four to life while trimming up to 3.5kg off the rear end.
Performance & Sound
Our slip-on systems dramatically improve mid-range torque while delivering that crisp, aggressive tone these VTEC-powered motors are known for. Whether you're chasing smoother pull through the revs or just want to be heard in traffic, the results are instant—and addictive.
Muffler Options
The Flanker
A modern stainless and carbon-fibre slip-on with removable baffle, giving you the option to tone things down or run it raw. Finished with our mesh grille and carbon end-cap.
The Mutt
Our favourite for the CB400 platform, the Mutt has no baffle, an aggressive tone, and a raw, vintage-racer edge. Constructed with a full carbon fibre shell and 304 stainless internals, it’s featherlight at just 700g, and absolutely howls once VTEC kicks in.
Materials & Construction
Both systems are built using 304 stainless steel collector pipes, premium welds, and include a spring-mounted connection, clamp, and high tensile 316 stainless mounting hardware. These are built to last, with proper weight savings and durability where it counts.
Fitment & Installation
Fitment: CB400 VTEC models (NC39 / NC42 platforms)
Install time: Under 10 minutes with basic hand tools
No tuning or ECU flash required—bolt it on and enjoy
Each kit includes:
Collector pipe
Muffler (Flanker or Mutt)
Baffle (Flanker only)
Springs, clamp, fasteners
Spring puller tool
Why Choose Us
Proven performance gains and aggressive tone
Modular muffler options to suit your taste
Lightweight construction with premium materials
Fast, DIY install—no tuning required
Built to last with stainless and carbon construction
If you’d like help selecting the right muffler for your build—or want to chat through custom requests—just shoot us an email and we’ll be happy to help.
Installation instructions:
Remove your existing muffler via the muffler clamp and rear mounting bracket bolt.
Slip the link pipe onto the existing header outlet and gently tighten the clamp, ensuring there is still play as adjustment will be required to set the desired position once the muffler is added.
Bolt the included S bend bracket onto the inside of the stock muffler mounting bracket (as can be seen in the product images). The S bend bracket should be snug but not torqued, allowing the bracket to rotate still.
Slip the muffler onto the link pipe and place the muffler in the desired position
Rotate the S bend bracket so that a bolt can fit from the muffler through the S bend bracket
Once the rear mount is torqued, tighten the clamp and add springs from the muffler to merge collector
Once the rear mount is torqued, tighten the clamp and add springs from the muffler to merge collector
After a minute’s running the protective layer of oil will have burnt off, and after your first ride the exhaust will take on a golden colouring.
If you have any questions about whether this is the right system for you or would like to discuss custom options please call or email us.
