4 Inch OE Xtreme SideSteps With Mounting Bracket Kit Textured Black 1999-2016 Ford F-250/F-350 Standard Cab Go Rhino ICON Alloys The OEM log manifold has

The OEM log manifold has a smaller outlet than the inlet of the turbine housing - meaning exhaust flow is forced to run through a sharp 90° step

depending on the model

Completely waterproof and impact-resistant

Also fits 2014-18 RAM 2500/3500

In contrast

4 Inch OE Xtreme SideSteps With Mounting Bracket Kit Textured Black 1999-2016 Ford F-250/F-350 Standard Cab Go Rhino ICON Alloys The OEM log manifold hasThe classic 4 Inch OE Xtreme Side Steps offer OE factory looks and quality that lasts. They are offered in lengths from 52 Inch to 87 Inch to fit regular, extended, and crew cab trucks; as well as most SUV CUV applications. The 4 Inch OEX is offered in two finishes: polished stainless steel with welded end caps (limited lifetime warranty) and textured black powder coat finish with black, plastic end caps (5 year limited warranty). The 4 Inch OE Xtreme