Looking for an enclosed trailer ramp door kit that makes lifting and lowering easier and safer? These 7-foot-wide and 6- to 7-foot-wide kits are designed to provide torsion-assisted support, smoother operation, and durable hardware for frequent use. Each option below targets common buyer needs: one-person operation, corrosion resistance, and compatibility with typical trailer doors around 160 lbs total. The list favors kits that come with cables, drums, mounting brackets, and practical safety features. See the quick comparison table for the top picks and which buyer each product best serves.
| Product | Best For | Key Benefit |
|---|---|---|
| BDYIFTXD TSAP780 Ramp Door Spring Kit | Full-size 7′ wide trailers | Comprehensive kit with high-torque 80 lb torsion spring |
| Kozlira TSAP780 Ramp Door Kit | Durable, corrosion-resistant setups | Premium metal construction, reliable travel |
| Kozlira TSAP780 With Winding Bars | Easy balance adjustment | Includes winding bars for safer winding |
| Siftary Ramp Door Kit TSAP780 | Complete replacement for enclosed trailers | All-in-one kit excluding torsion bar |
| Creative.C CAB1-8CB150 Cable Kit | Repair and safety for 150″ doors | Upgraded stainless steel eyelets, corrosion resistance |
BDYIFTXD TSAP780 Ramp Door Spring Kit for 7′ Wide Cargo Trailers
The BDYIFTXD kit targets 7′ wide enclosed trailers with doors weighing about 160 pounds total. It includes a 80 lb torsion spring rated for clockwise winding, plus two 12-foot travel drums and two 150-inch cables. A roof-mount bearing bracket pair, nylon rollers, winding rods, and gloves are part of the package. This configuration is best for buyers seeking a complete solution that minimizes effort during operation and reduces the risk of door jerk or misbalance. A noted caveat is the kit does not include a torsion tube shaft, so you must ensure compatibility with your current hardware.
Who it’s best for: solo operators and contractors who want a robust, ready-to-install system with clear, torque-assisted balance. Why selected: it provides a substantial 80 lb per hinge portion balance, enabling smoother opening and closing. Caution: verify that your trailer uses a compatible torsion tube shaft and that total door weight aligns with the 160 lb guideline.
Kozlira TSAP780 Ramp Door Kit
This Kozlira kit emphasizes premium metal construction and corrosion resistance for long-term outdoor use. It includes the essential 80 lb torsion spring, left and right cable drums with 12 ft travel, two 150″ stainless steel cables, two bearing brackets for roof mounting, nylon rollers, and mounting hardware. The packaging notes that a torsion bar shaft is not included. Best for buyers who want a sturdy, durable system that stands up to harsh environments and heavy use while preserving smoother operation.
Best for: buyers prioritizing metal quality and durability in harsh weather. Why: premium construction translates to long-term durability and steady performance. Caution: ensure the torsion bar shaft is compatible with your trailer and that you’re not missing an essential component in your current setup.
Kozlira TSAP780 With Winding Bars
Designed for 7′ wide trailers, this Kozlira option includes winding bars to facilitate safe and precise spring winding, along with the standard 80 lb torsion spring, two 150″ cables, drums, and roof-mount brackets. The kit notes that the torsion tube shaft is not included, but winding bars are a clear safety upgrade for installers handling torsion springs. Best for: installers seeking safer wind-and-balance adjustments. Why selected: winding bars reduce the risk of accidental release and improve control when balancing the door. Caution: confirm compatibility with your specific shaft length and mounting configuration.
Who it’s for: professionals and DIYers who value safer operation and straightforward balance adjustments. Avoid this if your trailer uses a non-standard shaft or if you’re missing mounting hardware in your current setup.
Trailer Ramp Door Spring Kit TSAP780 by Siftary
The Siftary kit presents a complete replacement solution for enclosed trailer ramp door spring systems, including an 80 lb right-hand torsion spring, two 12 ft cable drums, 150″ stainless steel lift cables, and mounting hardware. Notably, the torsion bar is not included. It is engineered for doors around 160 pounds total, offering balanced lifting and less hinge wear. Best for: operators replacing an entire ramp door spring system with a single purchase. Why: a comprehensive kit minimizes compatibility issues with existing components. Caution: torsion bar is not included, so you may need to source one separately.
Who it’s for: buyers looking for a full replacement package that simplifies installation and maintenance. Choose this if you want a ready-to-install kit that focuses on balanced operation and long-term durability.
Garage Door Cable 150” Kit CAB1-8CB150
Creative.C’s 150″ enclosed trailer ramp door cable kit focuses on replacement and safety, designed for CAB1-8CB150-style doors. It features high-strength steel wire with rust-resistant coating, with upgraded stainless steel eyelets for enhanced strength and longevity. This kit is essential for safety, ensuring smooth operation when used with compatible extension springs. Best for: replacing damaged cables and upgrading to corrosion-resistant hardware. Why: upgraded cable construction enhances reliability and reduces wear. Caution: confirm compatibility with your current spring system and eyelet dimensions.
Kozlira TSAP660 Ramp Door Kit
Although designed for 6′ wide doors, this Kozlira kit is included here as a close comparison to 7′ wide systems. It features a 60 lb torsion spring with right-hand winding, two 150″ stainless cables, and roof-mount brackets. It’s best for smaller trailers or lighter doors where a lighter-duty system is sufficient. Why selected: offers a compact option with similar components that can guide sizing decisions for smaller applications. Caution: fits 6′ wide doors and lighter doors—verify your trailer width and door weight before purchasing.
Buying Guide
What size and weight should you expect?
Most 7′ wide trailer ramp kits handle doors totaling around 150–160 pounds. If your door and hinge sections weigh more, look for higher-rated springs and robust drums. Measure door weight, hinge distribution, and mounting space before buying.
What components matter most?
- Torsion spring rating (lb): higher pounds mean stronger lifting, but require safe handling and proper tools.
- Drums and cables: ensure travel length matches your door height and that cables are stainless steel for corrosion resistance.
- Mounting hardware: roof brackets and nylon rollers impact long-term durability and ease of operation.
- Safety accessories: winding bars, gloves, and proper protective features reduce the risk of injury during installation and operation.
Installation considerations
- Some kits exclude torsion bars or shaft tubes—verify what’s included and what must be sourced separately.
- Compatibility with your trailer model, door width, and hinge design is essential to avoid misfit or unsafe operation.
- Professional installation is recommended for higher torque systems to ensure proper balance and safe winding.
Maintenance and durability
- Choose stainless steel cables and corrosion-resistant frames for outdoor exposure and road salt use.
- Inspect drum couplings, rollers, and bearings periodically to prevent binding and ensure smooth operation.
- Keep winding areas clear of debris and wear; replace worn cords and springs as needed to maintain safe function.
Quick questions
- Do these kits fit all 7′ wide trailers? Most do, but verify the door weight and shaft configuration.
- Is a torsion bar included? Some kits omit it; confirm before purchasing.
- Are cables stainless steel? Many are, offering better corrosion resistance.
- Can I install these myself? A confident DIYer can, but recommend professional help for safety-critical components.
FAQ
- What is the typical weight supported by a TSAP780 kit? About 160 pounds total, or roughly 80 pounds per hinged section.
- Do all kits include winding bars? Some do, some require separate purchase; check the product notes.
- Is a torsion tube shaft included? Most kits omit the torsion tube shaft; verify compatibility with your doors.
- Why replace cables and drums? Worn cables and corroded drums can impair lifting and safety.
- Can these be used for both 6′ and 7′ wide doors? Some models support both; confirm width and weight specs for your trailer.
- Are these parts weatherproof? Look for stainless steel and corrosion-resistant coatings for outdoor use.