Vintage Honda twins are dependable motorcycles, but air filtration is a common headache: OEM-style parts are often missing, expensive, or incomplete. In this guide, we explain why that happens, why some universal pod filters don’t play well with Honda CV carburetors, and how angle boot pod filters are a practical replacement across the following models.
Compatible Models
CT90 "Trail 90"
CB175 / CL175 / SL175
CB200 / CL200
CB350 / CL350 / SL350 K0
CB360 / CL360 / CJ360
CB450 / CL450 / CB500T
The reality of the OEM-style air filters
on vintage Honda twins
These motorcycles need an air filter to run correctly and to protect the engine. This is especially true for models like the CB350 / CB360 / CB450 twins which use the Keihin CV (constant velocity) carburetors. Airflow to the carburetor inlet helps the diaphragm and slide respond properly.
1. Factory assemblies
The first reality is that most OEM-style filters were built as glued assemblies. Over time, the filter media and rubber boot degrade, while the metal hardware usually survives. The problem is that when the element or boot fails, the assembly must also get tossed—there are not practical “rebuild” parts to refresh just the wear pieces.
2. Availability and cost
The second reality is that some models, like the CB350 and CB360, still have replacement elements available, but pricing can be high for what you’re getting. In addition you are only getting the element, not the complete filter setup. Other models are limited to used parts or new old stock (NOS), which can be expensive and unpredictable.
3. Missing hardware
Finally, many vintage Hondas these days are sold with filters and the mounting pieces missing. Filters are commonly removed during carb work and then lost while the motorcycle sits. Recreating the complete factory-style setup can turn into a parts hunt for air filter covers, cross over tube seals, specialty side cover hardware, and more.
Pod filters: the myth,
the real issue, and the fix
You may have heard “pod filters don’t work on vintage Honda twins.” In practice, the bigger issue is that many universal pods use a rubber boot that can partially block critical air passages at the carb inlet. When that happens, airflow into the carburetor is disrupted and the CV slide and diaphragm will not respond consistently.
Our Angled Boot
The factory boot acts like a runner: it funnels air cleanly into the carb mouth and avoids blocking passages. That “runner shape” is the key detail many generic pods ignore.
Our angle boot pods are designed to do two things well:
Airflow Path (CV carbs): A runner-style boot helps maintain a clean inlet path so the carburetor can operate as intended.
Fitment (tight frames): The angled body helps solve clearance problems where straight pods can hit the frame or other components. Angled pods can also make it easier to keep the original Honda side covers.
Final Note: Expect some tuning
Pods often flow differently than factory filters. Plan to evaluate jetting and mixture after installation. Some motorcycles may need rejetting; others may run acceptably with minor or no changes depending on engine condition, exhaust, elevation, and climate. We recommend starting with the factory jetting and moving up or down from there.
Full Installation Guides By Model
CT90 "Trail 90"
CB175 / CL175 / SL175
CB200 / CL200
CB350 / CL350 / SL350 K0
CB360 / CL360 / CJ360
CB450 / CL450 / CB500T