The Hellwig LP-25 Helper Spring set the standard for all other aftermarket helper springs. Featuring a Fulltime Spring Rate design it is the workhorse of the Hellwig Spring line. This is ideal for fleet applications or vehicles that consistently carry a heavy load day in and day out.
LP-25 Progressive Rate Load Leveling Helper Spring Ford 11-21 F250/F350 16-21 F450/F550 Requires 25301 Mounting Kit. Must remove factory contact overload contact springs or use contact overload helper. See Vehicle Fitment before ordering.