Smooth transitions in the mandrel-bent aluminum tubing decrease turbulence and minimize pressure loss, increasing horsepower and torque. This tube kit includes high quality stainless-steel, spring loaded T-bolt clamps and heavy-duty 5-ply polyester reinforced silicone couplings. A factory-style billet aluminum quick-connect adapter with an O-ring seal ensures a leak-free fit while maintaining superior strength and durability. It's finished in wrinkle black powder coating with a unique laser-etched aFe POWER logo for a custom look.