We worked directly with Speedwerx on the testing of this pipe. It is stainless steel and has a nice deep sound on the sled.
When using this pipe on a stock engine the benefits are a nice deep sound and resistance to the pipe cracking.
When using the pipe with our GYR Head and Carb kit you will see up to a ¾ hp gain in performance.
We recommend using our Part# GYR-E1121-10 Head and Carb kit to see the full potential of the Pipe.