The best that the aftermarket has to offer for the Duramax hot side.

-Designed to balance flow and velocity in one durable design.

-Nodular Iron manifolds cast with 3/4 inch flanges and 2 threaded NPT bungs for EGT/Drive pressure

-1/8th inch thick stainless tubing on the Up-Pipes and top-of-line bellows for durability over a lifetime of abuse.

- Priced comparable to a pair of BD manifolds and performance Up-Pipes, but with a clearly improved design

-Coating available in either Titanium Grey or Flat black (+$250)