PHAB 3.5" Mandrel Bent Muffler extension Pipe for 03-06 GMC Duramax
Expect improved sound, improved mpg, improved throttle response, more torque, more horsepower, and lower EGTs.
Includes 2 stainless steel band clamps for a complete install. Easy to install with basic tools. (length =29.50")
Expect improved sound, improved mpg, improved throttle response, more torque, more horsepower, and lower EGTs.
Includes 2 stainless steel band clamps for a complete install. Easy to install with basic tools. (length =29.50")
Any questions, please ask!
"LEGAL IN CALIFORNIA ONLY FOR RACING VEHICLES THAT MAY NEVER BE USED, OR REGISTERED OR LICENSED FOR USE, UPON A HIGHWAY." NOT FOR SALE IN CALIFORNIA AND NEW YORK.