The flagship of the manufacture’s severe duty line of vocational trucks, the 122SD suits specialty/heavy-haul, cane and oversized loads, along with mixers and dumps. New options announced at the 2015 Work Truck Show in Indianapolis are best suited for severe terrain and off-road applications: oil pan skid plates; 12-in. frame rails; threaded front suspension spring pins and bushing; and, heavy-duty bolted cross-members. Factory-installed front-bumper mud flaps and fog lights with rock guards are also available.