Stepped, internal head pipe design(Industry’s first) incorporates 38 years of race header technology allowing top-end horsepower without sacrificing low-end torque Metallic Ceramic Coating on internal head pipes retain heat, increasing exhaust velocity for more horsepower (Industry’s First). 2 1/2” outer pipe for the ‘Big Tube’ look with no visible blueing. Increased performance over a broad RPM range (most other brands of 21/2” straight pipes lose low and midrange performance). Specific applications for highly modified motors with bigger primaries and larger steps(Industry’s First) Comes with muffler cartridge that delivers a deep rumble sought after by most enthusiasts. Two optional muffler cartridges are also available offering either a smooth mellow sound or loud sound with improved flow. Everything is provided exhaust gaskets, C-clips, chromed flanges, machined brackets, nuts, bolts and detailed instructions
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