The Pipercross PX500 Twin Carburettor Filter is a high performance air filter designed for small d...The Pipercross PX500 Twin Carburettor Filter is a high performance air filter designed for small dimension twin carburettor set ups. Ideal for fitment with carburettors such as SUs, the PX500 has been developed for both competition and road use and fits applications where only one filter is required for both carburettors. The filter is made from Pipercross multi laminate competition foam and supported internally by an expanded metal cage. Always fit the largest filter possible and ensure that there is a minimum of 19mm between the trumpet mouth and the inner face of the filter.
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Product Information
Full details
The Pipercross PX500 Universal Twin Carburettor Air Filter is designed for enthusiasts needing a high-performance air filtration solution for small-dimension twin carburettor setups, particularly those using SUs. Its key benefit is improved engine breathing for both competition and road use, consolidating filtration for two carbs into one unit. A caveat to consider is the requirement for adequate clearance: ensure a minimum of 19mm between the trumpet mouth and the inner face of the filter for optimal fitment.
All features
Model Part Number
C503D
Brand
Pipercross
Extended Product Information
FAQs
What type of carburettors is this filter designed for?
The Pipercross PX500 is designed for small dimension twin carburettor setups, with a specific mention of suitability for SUs.
What is the minimum clearance required for installation?
A minimum clearance of 19mm between the carburettor trumpet mouth and the inner face of the filter is required.
Can this filter be used for a single carburettor?
No, the PX500 is specifically designed for twin carburettor applications.
How do I clean the Pipercross PX500 filter?
Use a dedicated Pipercross cleaning kit and follow the instructions provided with the kit. Ensure the filter is fully dry before reinstallation.
Is this filter suitable for both road and track use?
Yes, the filter has been developed for both competition (track) and road use.
What are the dimensions of the PX500 filter?
The filter has a height of 90mm and is a domed type designed for twin carburettor setups.
Troubleshooting
Reduced engine performance after installation
Verify the 19mm clearance requirement is met. Ensure the filter is not obstructed and is securely mounted. Check for any leaks around the filter housing.
Filter appears to be too large/small
Confirm the model number and ensure it is the correct Pipercross PX500 for your specific carburettor setup. Double-check measurements against available space.
Engine running rough or misfiring
Check that the filter is properly seated and sealed. Any air leaks around the filter can cause mixture issues. Ensure the filter is clean and not excessively dirty.
Pros and Cons
Pros
Enhances engine performance through improved airflow.
Consolidates filtration for twin carburettors into one unit, saving space.
Durable construction with competition-grade foam and internal support.
Suitable for a wide range of applications, from racing to daily driving.
Designed for easy integration with common carburettor types like SUs.
Cons
Requires precise installation to ensure adequate clearance (minimum 19mm).
May require custom mounting solutions depending on specific carburettor and engine bay configurations.
Not suitable for single carburettor setups.
Foam filters may require specific cleaning agents and procedures compared to paper filters.
Setup, Compatibility & Care Instructions
Setup:
Identify your carburettor type. The PX500 is designed for twin carburettor setups, commonly SUs.
Ensure the largest possible filter size is used that fits your application.
Crucially, maintain a minimum clearance of 19mm between the carburettor trumpet mouth and the inner face of the air filter.
Securely mount the filter to ensure it does not shift during operation.
Compatibility:
Designed for small dimension twin carburettor setups.
Ideal for SU carburettors and similar.
Check physical dimensions against your available space.
Care:
Regularly inspect the filter for dirt and debris buildup.
Clean the filter using approved Pipercross cleaning kits only. Avoid harsh solvents.
Allow the filter to dry completely before refitting.
Re-oil the filter according to the cleaning kit instructions if applicable.