We provide more than 300 models of exhaust pipes under various brands.

Thunder Exhaust Muffler Details

We provide two manifold models：

• Racing-type models
• On-road-type models
  (meets dimensions of standard manifolds)

Thunder's SUS304 stainless steel manifolds 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!

Features：

• Stainless steel assembled manifolds:Durable and rustproof
• Stainless steel exhaust pipes:Easily welded, sturdy
• Thick stainless steel tubes:Low-noise and with longer operation life

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.

Comparing 4-2-1 to 4-1 manifolds：
Guaranteeing high performance, the 4-1 manifold meets the latest world trend. Each engine's parameters must be known to design a 4-1 manifold. A short manifold is designed to minimize torque-loss that usually plague original autos, while four equal-length manifolds or headers are designed to maximize performance during mid/high rev ranges.

A 4-2-1 long manifold causes torque loss in engines due to insufficient re-pressurizing and large pipe diameters; and cracks easily due to having too many connections.