Outfit your semi truck to be Ready for the Road Ahead™ with improved suspension capabilities, with the Flagg Suspension Parts 3.5" x 4" Trunnion. Thanks to its high-strength design, this replacement piece is able to act as a stable mounting point for other suspension components, allowing for rotational movement throughout a system. Constructed to enhance safety by stabilizing and securing equipment. FleetPride is your First Click in Heavy Duty®.