LUXGEN U7（Non-ECO Hyper）｜M7 2.2T CATTED DOWNPIPE

Thunder's SUS304 stainless steel exhaust systems are low-noise and sturdy. With 2mm-thick tubes, unique in-house design, and HKS Dynojet horsepower test certification, we guarantee the superior quality of our manifolds and their extended operation lives!

Fuse welding is better than pulse welding：
Standard pulse welding simply welds manifold pipes together. But the weakness is that the pipes become thinner after welding, with structural changes and a shorter operation life. However, welding with the addition of fusible material the same as that of the pipes does not compromise pipe-wall thickness, but rather strengthens and extends durability.