Get steadier towing and less squat with RAS. These leaf springs and helper springs are known for easy setup, improved stability, and a more level stance under load, and they can raise the rear about 1-2 inches. Choose standard or heavy duty to match your typical load; heavier tuning can feel firmer when unloaded.
Yes, RAS works alongside weight distribution and sway control. With a WD hitch, towing felt very stable and body roll was reduced. Expect some sway to remain with a fifth wheel, but overall ride benefits. After adding RAS, recheck hitch height and bar or chain tension so the trailer sits close to level.
Match the kit to your payload needs. The standard kit has a weight capacity: 2,000 lbs and the heavy duty kit has a weight capacity: 3,000 lbs. If you're over about 1900 lbs payload, use the heavy duty; under that, the standard works well. The heavy duty can feel stiff unloaded even at the lightest pre-load, so adjust to taste.
Installation is generally straightforward for a DIYer. On some trucks you can install without removing the tires, using the black disc to adjust the springs. If vehicle-specific instructions aren't in the box, the universal instructions have worked. Match pre-tension left and right and recheck after a short drive.
It can raise the rear about 1-2" and give a noticeable rake. Many drivers note minimal impact to daily driving, but a heavy duty setup can feel stiff unloaded if pre-load isn't set light. If the stance looks high, consider leaving pre-load low when empty and avoid front leveling that could affect towing level.
Yes, RAS helps reduce squat and improves stability when towing. Set up your weight distribution hitch correctly first, then fine-tune RAS pre-load for your typical load. With a travel trailer and a WD hitch, ride and stability was much improved over just the factory leaf springs. If you move to a heavier trailer, step the RAS adjustment up as needed.
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