- For 04-08 F150 with 5.4L V8
- Shorty design for power gain from idle to mid-range RPM
- OE style ball socket collector connects to factory exhaust head pipe
- Fully mandrel bent tubes made of 16-gauge 304 stainless steel
- Head flanges laser-cut from 3/8-inch thick steel plates
- Flanges flattened by hydraulic press for precise and leak-free seal
- Flanges chrome plated for corrosion resistance
- All joints TIG welded for resistance against cracking and wearing
- Polished surface for extra protection against rusting
