I've got a total of THREE 4" aero ports custom made by Derrick. He did a PERFECT job!
Each port measures 23 5/8" with TWO additional 1" rings to adjust tuning. LOTS of length for just about any frequency.
Brand new, and PERFECTLY straight! Derrick really does fabulous work. I'm only selling them because I don't have the height on my box to install them like I would've liked to, hence why I'm having Doug (Pioneer Saturn) put his skills to work on the Triperfecta.
4. Price: :
$17 SHIPPED each, FIRM. I want my money back...these ports are just as light and just a great as PSP ports; except with these you get WAY more length.