Answering the search for reliable trailer ramp assist springs: these components are best for truck owners, trailer operators, and recreational vehicle users who need smoother, safer ramp operation. The following selections cover left/right coil springs, torque capacity around 2000 lbs, and 1-1/2 inch shaft compatibility. Use this guide to compare suitability, installation considerations, and potential limitations before purchasing.
| Product | Best For | Key Benefit | Approx. Torque |
|---|---|---|---|
| TRUCFUSION Trailer Ramp Spring (RS16933LH/RH) | Heavy ramps on pickup trailers | 2x left, 2x right springs for balanced lift | 2000 lbs |
| AIB2C Heavy-Duty Trailer Ramp Spring (RS16933LH/RH) | Vehicles with 1.50″ shaft | Heavy duty construction, bilateral pairing | 2000 lbs |
| RALZAOTO 2 Pair Heavy Duty Trailer Ramp Springs | Commercial or frequent-use ramps | 4 springs total, fits RS16933LH/RH | 2000 lbs |
| KOUTIANWU 3 Pair Heavy Duty Trailer Ramp Springs (RS16933LH/RH compatible) | Multiple ramp setups | Three-pair kit for flexible replacement | 2000 lbs |
| KOUTIANWU 2 Pair Heavy Duty Trailer Ramp Springs (RS16933LH/RH compatible) | Smaller or budget-conscious upgrades | Two-pair kit, straightforward install | 2000 lbs |
TRUCFUSION Trailer Ramp Spring for 1-1/2″ Shaft

Product Type: Replacement set with two left and two right springs designed for a 1.5″ diameter shaft. Features include 4″ long ears, 1/2″ steel rod, and inner diameter around 1-5/8″. Torque capacity is around 2000 lbs, aiding in lowering and lifting heavy ramps. Best for: trailers that require balanced twin-spring support on both sides. Caution: verify shaft diameter and mounting clearances before installation.
AIB2C Heavy-Duty Trailer Ramp Spring (RS16933LH/RH)

Product Type: Heavy-duty left and right ramp springs designed to lift heavy ramps. Features include 4″ long ears, 1/2″ steel round bar, and compatibility with a 1.50″ diameter shaft. Best for: users needing robust, bilateral spring pairs for frequent ramp operation. Limitation: may require specific mounting hardware; check your trailer’s fitment.
RALZAOTO 2 Pair Heavy Duty Trailer Ramp Springs

Product Type: Two-pair kit intended to lift heavy trailer ramps with left and right springs. Key specs include 4″ long ears and 1/2″ steel round bar, designed to fit over a 1.50″ shaft. Best for: trailer operators upgrading to reliable, high-torque spring systems. Caution: ensure compatibility with existing mounting brackets and shaft diameter.
KOUTIANWU 3 Pair Heavy Duty Trailer Ramp Springs

Product Type: A three-pair kit, designed for 1-1/2″ shaft with 2,000 lb torque. Features include 7 coils, 4″ long ears, and inner diameter around 1-5/8″. Best for: customers needing multiple spring sets for different ramp configurations or spare parts. Limitation: heavier kit; installation may require more space and hardware assessment.
KOUTIANWU 2 Pair Heavy Duty Trailer Ramp Springs

Product Type: Two-pair kit designed for 1-1/2″ shaft with 2,000 lb torque. Suitable for trucks and trailer gates. Features a straightforward installation with left and right springs. Best for: users who want a compact, balanced upgrade without buying extra spare parts. Caution: verify shaft compatibility and mounting spacing before purchase.
173067 Ramp Door Spring for Toy Hauler Trailer

Product Type: Ramp door spring kit designed for toy hauler trailers. Features include a total length of about 10 inches, 11 coils, and an inner diameter coil length of 6 inches. Best for: toy hauler owners needing a replacement for the slope door spring. Limitation: designed for specific toy hauler models; verify compatibility with your ramp design before purchasing.
Buying Guide
What should you consider when choosing trailer ramp springs?
- Compatibility: Check shaft diameter (commonly 1.5″ or 1″), spring length, and mounting hardware compatibility with your trailer or truck gate.
- Torque and deflection: Look for springs offering around 2000 lbs torque and about 90° deflection to ease lifting and lowering tasks.
- Quantity and configuration: Decide between two-pair, four-spring kits, or multi-pair sets to match ramp length and balance requirements.
- Durability: Prioritize heavy-duty steel and corrosion-resistant finishes to extend life in outdoor environments.
- Installation space: Ensure there is adequate space for installing left and right springs, along with any brackets or covers.
- Maintenance: Consider springs with straightforward replacement parts and clear part numbers to simplify future maintenance.
Frequently Asked Questions
- What is the typical torque rating for trailer ramp springs?
Most heavy-duty ramp springs target around 2000 lbs torque, which supports easier lifting of heavy ramps.
- Can I replace a single spring or do I need a pair?
Ramps usually require paired springs on both sides for balanced operation, but specific setups may use multiple pair configurations.
- What shaft diameter do these springs fit?
Many models fit a 1.50″ shaft, with some offering compatibility for 1″ or other sizes; verify your shaft before ordering.
- Are these springs suitable for all trailer types?
They are generally designed for trailers with ramp gates or tailgates, but check compatibility with your trailer’s ramp design and mounting.
- Do replacement springs affect ramp safety?
Yes. Proper torque and secure mounting reduce ramp effort and improve control during opening and closing.
- Can I mix brands or models for replacement parts?
Mixing may be possible if dimensions, torque, and mounting match; however, consistency is recommended for balance.