Chrome with chrome end caps. Race quality. Designed specifically to address the needs of tuned motors built for high horsepower applications, (high compression, large displacement, big cams). Every aspect of the Hi-Output slip-on design is singularly focused to yield maximum horsepower by improving volumetric efficiency. This technique works well for both heavily modified and stock engines. Compatible with Dresser duals & Power Duals head pipes and CVO drop skirt bags.