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Tested and available in several shaft diameters for popular street and race applications
2020 GMC Yukon XL
WHAT IS FREE-AIR CALIBRATION
NASCAR and SCCA regulations
Flowtech Purple Hornies 3-Hole Header Muffler - 3" Inlet/2.25" Outlet BAK Industries Tested and available in severalThe classic Purple Hornie tubular design glasspack mufflers give sound and performance gains that are more than impressive they're wild! The 16 gauge, 3. 5" diameter steel shell encloses an interior spiral louver baffle design that increases exhaust velocity while decreasing backpressure, projecting the sound waves into a temperature fibermat material. Available in an 18" case length with 2. 250" slip fit or choose from three different styles of 3"
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