Silicone intake hose specifically designed for air intake application.
6 Layer, 7mm thick silicone is much heavier than any other silicone on the market, This means it will not collapse under the vacuum of air filter restrictions like most silicones.
This makes it a great alternative to using metal intake pipes which transfer much more heat into the air intake.
 
4" internal diameter, 7mm wall thickness, 90°, 500mm long leg