2003-2026 Ram HD Rear Spring Severe Service Kit (DRTT3500D)

Drop a camper on the back of your Ram HD, hook up a heavy trailer, or load the bed right down, and this Timbren SES severe service kit keeps the truck level and planted. Each laser cut steel bracket is powder coated for a quality fit, and the single convoluted Aeon® rubber springs deliver a progressive spring rate, so the more weight that pushes down on them the harder they work to prevent rear end sag.

Severe service kits are built for top heavy loads like truck campers and salt spreaders, where stability matters most. They resist weight more aggressively than a classic SES kit, cutting sway and roll with no air lines, no compressor, and no maintenance after install. Run empty and the factory ride stays exactly as it should.

Features

• Made exclusively for top-heavy applications that require maximum stability, like truck campers or salt spreaders
• Uses a single-convoluted Aeon® spring that resists weight more aggressively than classic SES kits
• Reduces sag, sway, and roll when hauling top-heavy loads
• Comfortable unloaded ride
• DIY installation
• Zero post-installation maintenance

Specs

• Rated Capacity: 8,000 lbs
• Kit height without 1" spacer = 6.25"
• Kit height with 1" spacer = 7.25"
• Position: Rear

Notes

• Even though you’re increasing the spring rate by adding this upgrade, this does not increase the GVWR (Gross Vehicle Weight Rating). Please make sure that the load does not exceed the GVWR set by the manufacturer.
• Ram 2500 applications end at 2013. 2014 and newer Ram 2500 models use a rear coil spring suspension that this leaf spring kit does not fit.

Includes

• 2 x 1" Rubber spacers
• 2 x Mounting Brackets
• 2 x Patented Aeon® SES suspensions (hollow rubber springs)
• All necessary hardware