SpinTech is the only muffler manufacturer to offer a complete line of oval inlets/outlets, ranging from 2 1/2" to 5" oval. SpinTech's Unique patented design provides maximum performance for today's modern engines. Its all done by means of a spin sound trap, which captures sound vibration (noise) and turns it into heat within the muffler case. SpinTech mufflers are individually crafted with welded construction. We use no packing or moving parts that will wear out. A SpinTech muffler will sound the same throughout its lifetime because there is no maintenance required for a muffler without packing. Be sure its a Genuine SPINTECH Muffler.
If it SOUNDS to good to be true...its SPINTECH!