Add rear suspension support to your vehicle for heavy towing and hauling. This RoadActive Suspension Mega-Duty system strengthens your factory leaf springs by up to 50% to help reduce squat, sway, bounce, and axle wrap.
When you hitch up a trailer or load the bed, the rear suspension can sag and throw off your handling. The RoadActive Suspension Custom Leaf Spring Enhancement Kit strengthens your factory leaf springs by up to 50% by turning your factory leaf springs into a mechanically active system. It automatically adjusts tension to the load, keeping your ride level whether youre towing, hauling gear, or carrying tools in back. You get steadier steering, better braking traction, and correct headlight aim no matter the weight behind you.

Heavy loads can make your truck lean or bounce through turns and cause wheel hop when accelerating. The variable-rated coil tension springs in this kit engage instantly to stabilize the leaf springs before problems start. They strengthen your suspension to cut down sway and body roll on corners while preventing axle wrap and bottoming out under weight. The result is a smoother, more controlled ride with improved traction during braking and acceleration.


Unlike systems that need constant pressure checks or air adjustments, this setup is ready to go after installation. Each unit bolts under the factory leaf spring and around the U-boltsno drilling, cutting, or welding required. Once tensioned during setup, the springs activate automatically when loaded and disengage when empty. Theres no need for regular monitoring or maintenance, just reliable performance every time you tow or haul.


Long days on the road mean exposure to rain, salt, and grit that can wear out lesser parts. Each RAS unit is made from high-grade alloy steel with an epoxy e-coat for corrosion resistance. The end brackets have a salt spray rating of more than 800 hours, giving them lasting protection against rust and harsh weather. You get a suspension upgrade that holds up to years of heavy use with confidence backed by a 5-year warranty and 30-day money-back guarantee.


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