Heavy cargo can make a trailer sag and sway, which hurts handling and stability. This suspension enhancement system uses two hollow rubber springs that mount above the axle to help keep the trailer level while hauling. They work together with the existing leaf spring setup, adding up to 8,600 lbs of extra support as needed. When weight increases, the springs stiffen progressively to maintain proper ride height and balance, giving you steadier tracking behind the tow vehicle.
Rough pavement and washboard roads can make any trip uncomfortable. The Timbren system acts as a shock absorber, taking the brunt of bumps and vibration before they reach the trailer frame. The convoluted rubber design compresses easily over small dips, then firms up under heavier hits, so your trailer rides smooth and quiet whether it’s lightly loaded or fully packed.
Sharp turns and crosswinds often cause body roll or sway. Each rubber spring works independently to support its side of the trailer, so when you corner or swerve, the springs react instantly to keep the trailer flat and stable. This independent action also helps control off-center or uneven loads, improving confidence and safety when towing.
Installing the system is straightforward. Custom brackets bolt directly onto the trailer frame above the axle, and the hollow rubber springs mount to those brackets with about an inch of clearance from the axle. That gap lets the original suspension move freely under light loads, then brings the Timbrens into play only when extra support is needed—no air lines or adjustments required.
By sharing the load and absorbing impacts, the system reduces stress on the trailer’s leaf springs, shackles, and bushings. It helps extend suspension life, maintain consistent ride height, and prevent the bottoming-out that wears out hardware over time. Designed for tandem-axle setups, this kit gives medium-duty highway trailers a reliable boost in stability and performance for the long haul.
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