The Hellwig Pro-Series helper spring for 1999–2007 Ford F-250 Super Duty offers up to 2,500 lb of level load capacity through the Silent Support System. Its over-axle mounting design eases installation and allows tunable support to maintain ride height and control under load. Suited for half-, three-quarter- and one-ton scenarios, the spring includes bushings for quieter operation and carries warranty support for regular heavy-duty use.
Hellwig 99-07 Ford F-250 Super Duty Pro Series Helper Spring - Up To 2500lb Level Load Capacity