STILLEN Race Pipes replace the stock catalytic converters for unrestricted maximum exhaust flow. As race only parts, they delete the catalytic converters and are not street legal.
The Race Pipes, combined with STILLEN's new performance headers, produce big increases in power and torque. Contributing to the performance gains along with the straight-through free-flowing design, is an expansion chamber that promotes more efficient exhaust scavenging.
For example, the combination of STILLEN Headers and Race Pipes yield performance gains of 16 hp at @ 6200 RPM and 20 lb/ft @ 3800 RPM at the wheels for a 2003 Nissan 350Z as tested on the STILLEN Dyno.
With STILLEN's 18 years of experience in designing and manufacturing Nissan performance parts, you should have complete confidence that every STILLEN product is of the highest quality and has under gone extensive research and development before production.
*** 350Z / G35 applications not for use with forced induction vehicles due to tuning limitations. ***
NOTE: This part is designed for racing only. Use of this part on the street or highway is a violation of federal law in the United States. We sell this part on the condition that it be used in a legal manner.