Looking for the best trailer ramp spring assist kit to ease lifting and lowering heavy ramps? This guide highlights five top options, ideal for different trailer setups. The selections cover 1.5″ shaft coils, tailgate lift assists, and universal spring kits. Best for: heavy-duty ramp users, frequent loaders, and DIY trailer upgrades. Each entry notes who it’s best for and why, plus a practical caveat to consider before you buy.
| Product | Best For | Why It Stands Out |
|---|---|---|
| TRUCFUSION Trailer Ramp Spring (RS16933LH/RH) | Heavy-duty ramps with 1.5″ shafts | 2 left + 2 right springs offer 2000 lb torque and 90° deflection for smooth operation |
| NAZOU Trailer Tailgate Lift Assist Kit | Open utility trailers needing balanced, adjustable lift | Premium two-sided assist reduces strain and fits various tailgates and rails |
| Kozlira TSAP780 Ramp Door Spring Kit | Rear ramp doors on enclosed trailers | 80 lb torsion spring with cables and drums for durable, long-term use |
| Gledewen Trailer Gate Lift Assist (Upgrade) | Aluminum roller upgrades for quieter, smoother lifts | 5x longer life than plastic rollers; easy 30-minute install |
| AIB2C Heavy-Duty Trailer Ramp Spring | Heavy ramps with 1.5″ shaft | Includes left and right springs, designed to lift heavy ramps reliably |
TRUCFUSION Trailer Ramp Spring for 1-1/2″ Shaft
Includes replacement springs with 1.5″ shaft compatibility. Features 2 x Left and 2 x Right springs with 4″ ears and 1-5/8″+/- inner diameter. Provides 90° deflection and 2000 lb torque for easier ramp lifting and lowering. Best for: trailers with shaft-driven ramps needing high-torque assistance. Caution: confirm shaft size and mounting compatibility before purchase.
NAZOU Trailer Tailgate Lift Assist Kit
Premium two-sided tailgate lift assist designed to ease heavy tailgates and ramps. Integrated ramp springs enable smooth, effortless lifting and lowering for daily utility trailer use. Best for: trailers that see frequent load/unload cycles and require balanced support to prevent wear. Caution: ensure compatibility with your trailer’s tailgate size (12–24 inch rails, 4–6 ft gates).
Kozlira TSAP780 Ramp Door Spring Kit
Designed for 7′ wide cargo trailers; includes 80 lb torsion spring, cables, and drums. Metal construction emphasizes corrosion and wear resistance for harsh outdoor conditions. Best for: rear ramp doors in cargo trailers needing reliable spring-assisted operation. Caution: does not include a mounting bar; verify installation space and mounting hardware requirements.
Trailer Ramp Gate Assist (Upgrade) – Gledewen
Upgrade kit with an all-aluminum roller system designed for easy installation in about 30 minutes. Best for: users upgrading from plastic rollers to a durable aluminum option for longer service life. Caution: verify compatibility with existing tailgate rails and door geometry before purchase.
AIB2C Heavy-Duty Trailer Ramp Spring
Heavy-duty coil springs for left and right sides, designed to lift heavy ramps, with 4″ long ears and 1/2″ steel round bar. Fits over a 1.50″ diameter shaft. Best for: those who need robust, symmetrical lifting power. Caution: ensure the shaft diameter matches your trailer setup to avoid fit issues.
Buying Guide
What to check before buying
Shaft diameter and spring torque are critical. Confirm your ramp shaft size (commonly 1.5″ or 1.25″ for many trailers) and choose a kit with torque that matches your ramp weight. Consider the mounting hardware and whether a two-sided or single-sided spring set is appropriate for your ramp design.
Best for different trailer types
- Heavy-duty trailers: look for high-torque, dual-spring sets like TRUCFUSION.
- Open utility trailers: NAZOU offers balanced lift without overstraining rails.
- Enclosed cargo trailers: Kozlira TSAP780 provides an integrated drum and cable system for smoother operation.
- Upgrades and replacements: Gledewen upgrades with aluminum rollers for longer life.
- Budget-conscious kits: AIB2C provides essential dual springs for common 1.5″ shaft ramps.
Installation considerations
Most kits advertise straightforward installs, often around 30 minutes. Check for included hardware, clear mounting surfaces, and whether welding or drilling is required. Unpainted or metal-only components may need protective coatings after install.
Durability and maintenance
Metal construction with corrosion resistance supports outdoor use. Inspect springs for signs of wear, rust, or loss of tension; replace as needed to maintain safe ramp operation.
Safety and usage tips
- Always secure the trailer and support stands before working on ramps.
- Test ramp motion slowly after installation to ensure even lift.
- Avoid overloading beyond the ramp’s rated torque and capacity.
FAQ
- Q: Do these kits work on all trailer ramps? A: Compatibility depends on shaft size, mounting points, and ramp geometry. Check product specs carefully.
- Q: Can I install these myself? A: Most kits are designed for DIY installation, but some setups may require basic fabrication or welding.
- Q: What torque do I need for heavy ramps? A: Higher torque (roughly 2000 lb or more) is better for heavy-duty ramps that require frequent lifting.
- Q: Are there maintenance steps after installation? A: Regular inspection of springs, cables, and rollers is advised; lubricate moving parts as needed.
- Q: Will upgrading to aluminum rollers help? A: Yes, aluminum rollers tend to last longer than plastic and reduce wear on rails.