PERRIN 15-21 Subaru STI Front Mount Intercooler Boost Tubes + Hardware - Red Tubes

If you're looking to get the most out of your turbocharged Subaru WRX STI, especially if you've upgraded your front mount intercooler, then these Perrin boost tubes are a smart move. They replace the restrictive factory rubber hoses that connect your intercooler to the throttle body, helping to improve airflow and maintain consistent boost pressure. This is especially important when you're pushing your engine harder than stock, as the factory hoses can sometimes expand or even collapse under higher boost levels.

Perrin builds these tubes with smooth, mandrel-bent aluminum piping, which offers a much cleaner path for the air charge compared to the corrugated rubber of the stock pieces. This not only helps with airflow but also makes for a more solid connection. The tubes are then fitted with high-quality, multi-ply silicone couplers and T-bolt clamps. These couplers are designed to handle the heat and pressure found in the engine bay, and the T-bolt clamps ensure a secure, leak-free seal that won't loosen up over time. The red color of the silicone adds a nice visual touch under the hood, too.

This kit comes with everything you need for installation, including all the necessary hardware and couplers. While installing these tubes, it's a good time to double-check all your intercooler connections and ensure they are properly seated and tightened. This is a well-built upgrade that complements a front mount intercooler setup, helping your STI breathe easier and perform more consistently.