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"Polished stainless Slash Cut / Chrome steel Straight Cut. 2-1 megaphone system with a 2" collector and a 4" diameter muffler.
Provides approximately 8-10% HP gain compared to stock. Designed for optimal results with stock capacity and generally smaller engines. Backpressure is adjustable using the SuperTrapp internal disc system. Includes 12 four-inch discs. Fits:> 71-84 Shovelhead (kick & e-start)