ICON 2020+ Ford F-250/F-350 Super Duty Front 4.5in Dual Rate Spring Kit Suspension>Leaf Springs & Accessories The airbox has been crafted

The airbox has been crafted with premium materials and designed with 2 air scoops that feed from factory vent locations

we were able to increase sound volume while adding a slightly deeper tone

When it comes to product development

If your M340i is equipped with an aftermarket downpipe

ICON 2020+ Ford F-250/F-350 Super Duty Front 4.5in Dual Rate Spring Kit Suspension>Leaf Springs & Accessories The airbox has been craftedThe ICON Vehicle Dynamics 2020 2022 Ford F 250 & F 350 Super Duty 4. 5" coil springs are designed for drivers demanding the ultimate in performance and ride quality, while allowing for increased wheel travel (when used with ICON shocks) and the fitment of larger tires. The ICON Ford Super Duty coil springs provide 4. 5" of lift height and feature a dual rate design. The dual rate design allows for a softer initial rate for superb on road comfort and a