Universal Series Mufflers can be used in the fabrication of practically any exhaust system. The unit consists of a canister and tip, which must be welded onto custom piping. Sound levels must be controlled through piping diameter and the effective use of resonators. The line of Apexi N1 universal mufflers can be fit onto virtually any vehicle and produces the low pitch growl and idle tone that resonates via the N1 muffler. 90mm (3.54inch) Tip, Polished Stainless Steel, Straight Through Design, Cost Effective and Versatile Choice, HP & Torque: 5% Increase HP. Available in chrome, blue, black, magenta and green in 60mm and 80mm inlet.