AIB2C Trailer Ramp Coil Springs - Left & Right Pair RS16933LH/RS16933RH, 1/2 in Steel, 4 in Ears

Built for trucks, trailers and gate applications, this matched set of coil springs delivers a 90-degree deflection and robust force where you need it most. Each kit includes one left-side and one right-side spring with 4" long ears and a 1/2" steel round bar body that fits over a 1.50" diameter shaft. The springs are designed for repeated use under heavy loads so ramps operate more smoothly and require less effort to raise or lower.

How do these springs improve ramp operation?

The coil springs take on a portion of the ramp weight and provide a controlled assist during both lifting and lowering. That reduces the physical force needed and helps prevent sudden drops or uncontrolled movements. Installation balances ramp action by using a mirrored left and right spring pair.

• 90-degree deflection for consistent assist through travel range
• Left/right matching to keep ramp motion centered
• Durable 1/2" steel round bar resists deformation under load
• Fits over common 1.50" diameter ramp shafts

What are the key measurements and fit points?

Each spring includes 4" long ears designed to hook or pin into your ramp assembly. The coil body accepts a 1.50" diameter shaft and the wire thickness and ear length are sized for heavy-duty trailer and truck gates. Confirm dimensions against your existing springs or shaft before ordering.

• 4" long ears for secure mounting or pin engagement
• 1/2" steel round bar coil wire for strength and fatigue resistance
• Designed around a 1.50" diameter mounting shaft
• Sold as a left + right pair (RS16933LH & RS16933RH)

How durable and maintenance-friendly are these springs?

Manufactured for heavy-duty use, the coil springs tolerate frequent cycling and the stresses of lifting heavy ramps. Routine inspection and basic lubrication at the mounting points extend service life. Replace both sides together to maintain balanced ramp action and avoid uneven wear.

• Robust construction for repeated cycles and heavy loads
• Simple visual inspections reveal wear or ear deformation
• Periodic lubrication at shaft and ear pivot points recommended
• Replace matched pair to ensure symmetrical operation

Who is this for? This AIB2C spring pair is ideal for vehicle and trailer owners, fleet managers, and repair shops that service heavy ramps, truck tails, or trailer gates. If you need reliable assistance for lifting or lowering heavy ramp panels and your setup uses a 1.50" shaft with spring ears, these left and right springs are a practical, serviceable upgrade to restore smooth ramp operation.