Spiral Turbo Specialties

Spiral Turbo Specialties has developed an exhaust baffle system for the semi-truck, bus, and heavy duty vehicle industry. This system not only significantly reduces noise levels, increase horse-power and torque, BUT also improves fuel economy by 3%-8% (depending on driver, geographic area, and all the other variables concerned with obtaining better fuel economy). Check out our line of products here.  These are internal mufflers for straight pipe.