TRUCFUSION Trailer Ramp Springs for 1.5" Shaft — LH/RH Coil Pair, 2000 lb·in Torque, 90° Deflection

TRUCFUSION Trailer Ramp Spring RS16933LH/RS16933RH is a direct-fit coil spring replacement for 1.5" round shaft truck gates, engineered to restore smooth raising and lowering of heavy ramps.

If your truck or trailer gate is stiff, hard to lift, or doesn't stay supported, worn ramp springs are often the culprit. These replacement coil springs are manufactured to match original specifications for size, torque, and deflection so you can quickly return your ramp to reliable operation without modifying the shaft or support hardware.

How will these springs affect ramp operation?

Installing the correct coil springs reduces the manual force required and stabilizes the ramp through its travel. Each spring delivers a designed deflection and torque that compensates for ramp weight and helps control movement during lifting and lowering.

• Provides approximately 90° of deflection for predictable motion.
• Delivers around 2000 lb·in of torque to assist heavy-duty ramps.
• Specifically made for 1.5" diameter round shafts to avoid binding.
• Pair of left and right coils included for balanced performance.

What are the physical dimensions and fitment details?

These springs are produced to match common OEM sizes so swapping out worn units is straightforward. Key dimensional features ensure compatibility with shafts near 1-5/8" inside diameter and typical gate hardware.

• Fits 1.5" (1-1/2") round shaft installations.
• 4" long ears with 1/2" steel round bar terminations for secure anchoring.
• Inner diameter approximately 1-5/8" (+/- tolerance) for close fit on the shaft.
• Sold as a kit: 2 left-hand and 2 right-hand coil springs included.

How do I avoid installation problems and prolong spring life?

Proper installation and correct shaft geometry are essential to avoid binding and premature wear. These springs are made for round pipe use; installing on square or distorted shafts can impede rotation and damage the coils.

• Mount on smooth, straight 1.5" round shafts only; avoid square tubing.
• Ensure anchors and ears seat cleanly without excessive lateral force.
• Replace springs in matched pairs (left and right) for balanced torque.
• Inspect shaft and hardware for wear before installing new springs.

Will these springs match my trailer's existing parts?

These replacement springs are labeled RS16933LH and RS16933RH to correspond with common OEM left and right ramp coils. If your original part numbers match or your measurements align with the listed dimensions, they should fit without modification.

• Compatible with trailers using RS16933LH and RS16933RH part references.
• Designed to replicate original torque and travel characteristics.
• Works best when both left and right sides are replaced together.
• Not intended for use on non-round shafts to prevent binding issues.

Who is this for: This TRUCFUSION coil spring kit is intended for truck and trailer owners, fleet maintenance technicians, and repair shops needing a reliable, dimension-matched replacement for worn ramp springs. Choose this kit if you have a 1-1/2" round shaft gate, want to restore smooth ramp operation, and prefer a direct-fit solution that avoids shaft alteration or custom fabrication.