The Hellwig LP-35 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-35 Heavy Duty Load Leveling Helper Springs Ford 11-21 F250/350 2WD/4WD; 17-21 F450 2WD/4WD Pickup; 16-21 F250/350/450/550 Cab/Chassis 2WD/4WD Requires PN25301 mounting kit: Do Not Use w/Factory Overload Contact Springs or use 9703