S&S SUPERSTREET 2:1 EXHAUST SYSTEM FOR 14-20 XL MODELSS&S SUPERSTREET 2: 1 EXHAUST SYSTEM FOR 14 20 XL MODELS The S&S R&D team took their proven 2: 1 SuperStreet exhaust internals and ported them over to the Sportster platform. None of the shorty system fluff that kills power, they'er here for the gains and this pipe is designed to make power. Highly engineered bends wrap around factory controls (works with mids or fowards), exciting through a stepped header and 4" muffler. The entire system is coated in