SuperTrapp 728-71578 4in. Fatshots Slip-On Muffler

3.5in. chrome-plated body flares out to a 4in. slash-cut end which is capped off with SuperTrapps legendary 4in. discs and polished trim ring. A straight-through 2in. diameter performance core is pillow-pack wrapped. 12 discs per muffler and closed end caps for a 15% horsepower and 12% torque gain. Can be toned down; 6 discs per muffler and closed end caps will provide them with a sound-compliant, 86dB at idle; quieter than stock, but with enhanced performance. Includes twenty-four 4in. discs, closed end caps and all necessary mounting hardware. FatShots Slip-On mufflers are compatible with stock headpipes, SuperTrapp True Duals. Sold in pairs. Made in the u. s. a.