Flow and Performance: Smooth transitions in the mandrel-bent aluminum tubing decrease turbulence and minimize pressure loss, increasing horsepower and torque. Perfect Fit: This tube kit features a CNC machined turbo adapter flange, stainless-steel T-bolt clamps, and heavy-duty 5-ply polyester reinforced silicone couplings for superior strength and durability. Custom Appearance: It's finished in wrinkle black powder coating with a unique laser-etched aFe POWER logo for a custom look. When it comes to engineering for power, performance, protection and value, aFe POWER is the only choice. BladeRunner 2-1/2 IN Aluminum Hot Charge Pipe Black Subaru WRX 15-20 H4-2.0L (t) Subaru WRX 15-20 H4-2.0L (t)