These are hand made, TIG welded from high quality 6061 T6 aluminum. The flanges are all CNC machined and surfaced for precise fitment and a leak free seal. Each plenum is press bent to reduce the number of welds which will assure maximum strength under high boost applications.

The plenum measures 16" long by 4 1/4" deep, the plenum also features a 1" taper design to even out the airflow, with a runner length of 5 1/4".

Velocity stacks are CNC machined into each plenum bottom to improve airflow by 10-15%.

The vacuum ports are placed on the underside of the plenum for a clean professional look.

Each manifold comes with a custom made SS dipstick tube.

This manifold will also eliminate your EGR system so if you are not running a stand alone engine management most likely you will receive a CEL due to the eliminated EGR. An ECU flash is in the works to eliminate this error code. Expected gains can be anywhere from 10-45 HP depending upon your setup!

Click here to see a DSM manifold with the mirror polish.