Spectre foam inserts are used as a temporary “coupler” to attached air intake tubing when mocking up a custom air intake build. This insert fits inside and connects two ends of 4 inch outside diameter tubing to simplify the creation of your custom intake system.
- Fits 4 inch outside diameter tubing
- Used for mocking up a 4 inch air intake system
- Simplifies creation of custom intake system
- Easy to use and universal