Find the right lowboy trailer ramp springs to make loading and unloading safer and easier. This guide highlights five high-torque trailer coil springs designed for 1.5″ shafts, suitable for heavy ramps and gates. Ideal buyers include fleet owners, DIY trailer enthusiasts, and professionals who frequently operate heavy ramps. Each option is evaluated for best use case, potential limits, and practical considerations to help you choose the right spring set for your trailer ramp system.
| Product | Best For | Key Benefit | Notable Limitation |
|---|---|---|---|
| Trailer Ramp Spring for 1-1/2″ Shaft … RS16933LH RS16933RH | Heavy-duty fleets and frequent ramp users | High torque, 2000 lb; 90° deflection | Two left and two right springs required for full setup |
| 2 Pair Heavy Duty Trailer Ramp Springs RS16933LH RS16933RH | Residential/DIY trailers needing reliable lift | 2,000 lb torque; clear RS16933LH/RS16933RH compatibility | May require exact shaft fit; verify shaft diameter |
| Heavy-Duty Trailer Ramp Spring RS16933LH RS16933RH | Pro-grade replacements | Heavy-duty steel, long service life | Not a single-spring solution; left/right pair needed |
| 2 Pair Heavy Duty Trailer Ramp Springs; RS16933LH RS16933RH | Trucks and trailer gates with RS16933LH/RS16933RH | Durable 7-coil design; 2,000 lb torque | Image and listing emphasize compatibility; confirm fit |
| Gledewen Tailgate Lift Assist Replacement Spring (2PCS) | Tailgate lift systems and multi-component kits | Includes spring pair with cable/chain kit | Includes additional components; verify compatibility with ramp |
Trailer Ramp Spring for 1-1/2″ Shaft — RS16933LH RS16933RH
Best for: fleets and heavy-duty trailer operations that require reliable lifting torque. This set includes two left and two right coil springs designed for a 1.5″ shaft with 90° deflection and about 2000 lb of torque. The configuration supports balanced lifting and lowering, reducing manual effort and ramp bounce when loading heavy loads.
Why chosen: The four-spring kit targets both sides of the ramp, delivering symmetric performance and predictable operation. The torque rating is suitable for frequent ramp use on heavier trailers, improving handling and safety during loading tasks.
Limitations: Ensure your shaft diameter and mounting hardware match the 1.5″ specification and the 4″ ear length. Misalignment or incorrect pairing (left vs right) can degrade performance.
2 Pair Heavy Duty Trailer Ramp Springs — RS16933LH RS16933RH
Best for: users who want a straightforward two-pair replacement for RS16933LH/RS16933RH configurations. These springs provide high torque (about 2000 lb) and a similar 90° deflection for easier ramp operation. They suit trucks and trailer gates that require dependable lifting power.
Why chosen: The product explicitly notes compatibility with RS16933LH and RS16933RH, easing replacement decisions for trailers already configured with those parts. The 4″ long ears help with mounting stability.
Limitations: Like other multi-spring sets, confirm shaft fit and ensure you’re purchasing the correct side pairings for your ramp assembly.
2 Pair Heavy Duty Trailer Ramp Springs — RH/ LH, 2000 Lbs Torque
Best for: consumers who prefer steel-heavy construction with a focus on long service life and sturdy elasticity. These springs are designed to fit over a 1.50″ diameter shaft and deliver robust torque for frequent ramp use.
Why chosen: The product emphasizes “heavy steel material” and multiple forging processes, which contributes to durability on demanding trailer ramp applications. The 2,000 lb torque supports difficult lifting tasks without excessive effort.
Limitations: As with other heavy-duty options, verify shaft diameter, spring length, and mounting positions to avoid improper fit or uneven ramp compression.
Gledewen Tailgate Lift Assist Replacement Spring
Best for: buyers seeking a combined kit that includes spring, cable, and chain components for tailgate or ramp lift systems. This option suits installations that benefit from an integrated replacement package rather than a single spring alone.
Why chosen: It provides a complete assembly suitable for tailgate or ramp lift applications, potentially simplifying compatibility concerns when upgrading or replacing multiple components at once.
Limitations: Verify the kit compatibility with your specific ramp design and mounting points; extra components may be unnecessary for simple ramp replacements.
Buying Guide: Key Considerations for Lowboy Trailer Ramp Springs
What torque do you need? Most heavy-duty trailer ramps use around 2000 lb torque with 90° deflection. Higher torque reduces manual effort and speeds up loading. Confirm torque rating, deflection, and the exact shaft diameter your ramp uses (commonly 1.5″).
How many springs are required? Some ramps use two springs (left and right), while others use four (two left, two right) for balanced lift. Check your ramp’s mounting points and ensure you purchase the correct quantity for symmetry and safety.
Length and mounting fit matter. Look at ear length (e.g., 4″ ears) and shaft fit (1.5″ diameter). An ill-fitting spring can cause uneven ramp operation, binding, or accelerated wear.
Material and durability. Heavy-duty steel springs with forged components offer longer life and better fatigue resistance. Consider brands with clear construction details to maximize durability in harsh conditions.
Compatibility and replacement strategy. When replacing, match the Part Number (if listed) or confirm compatibility with your existing left/right spring configuration. For composite kits, ensure the entire assembly aligns with your ramp design.
Frequently Asked Questions
- What is the typical torque for trailer ramp springs?
- Do I need to replace both left and right springs at the same time?
- How do I know if a spring fits my shaft diameter?
- Can I install a single heavy-duty spring, or do I need pairs?
- Are these springs suitable for all types of lowboy trailers?
- What safety steps should I take when replacing ramp springs?
Answers: Typical torque is around 2000 lb for heavy-duty ramps. Replacing both left and right springs is recommended for balanced operation. Confirm shaft diameter (often 1.5″) and mounting configuration. Pairing is generally required for reliable lift; single-spring use can cause uneven ramp movement. Compatibility depends on ramp design, so verify before purchase. Always depressurize and secure ramps during installation and follow manufacturer guidance for safety.