A strong ramp door kit matches your trailer width and door’s spring rating, then supplies the cables, drums, and mounting parts needed for the repair. For many owners of 7-foot enclosed cargo trailers, the Kozlira TSAP780 with Winding Bars stands out because its listed package includes an 80 lb spring, cable drums, stainless cables, brackets, rollers, and winding bars. The products here cover 7-foot systems rated for ramp doors up to about 160 lb and 6-foot systems rated for up to about 120 lb.
Before choosing, verify your trailer’s width, existing spring system, door weight, and whether you need a torsion tube or winding tools; several kits explicitly omit the tube or bar. The comparison below separates those fit and package differences.
The Kozlira TSAP780 with Winding Bars is the best overall choice in this group for a compatible 7-foot enclosed trailer. Its listed package includes an 80 lb, right-wind torsion spring, 12-foot-travel cable drums, 150-inch stainless cables, roof-mount bearing brackets, nylon rollers, and winding bars. It is specified for up to 160 lb capacity, and its one-year warranty is also listed.
The torsion tube shaft is not included, so confirm your existing tube and trailer configuration before ordering.
Our Top Picks
Best OverallKozlira TSAP780 with Winding Bars
Its 80 lb spring is rated for up to 160 lb, and the listed package includes drums, stainless cables, brackets, rollers, and winding bars.
View on Amazon
Complete 7-Foot KitThe 7-foot 80 lb system is rated for 160 lb and lists spring, drums, cables, brackets, and rollers, with a 180-day warranty.
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One-Year WarrantyThis 7-foot kit specifies an 80 lb spring for doors around 160 lb and includes 150-inch stainless cables and mounting hardware; the torsion bar is excluded.
View on Amazon- Support Included BDYIFTXD TSAP780
- Best 6-Foot Fit Kozlira TSAP660
Compare Ramp Door Kits by Trailer Fit and Included Hardware
| # | Product | Weight | Buy |
|---|---|---|---|
| 1 | 1. Kozlira TSAP780 with Winding BarsBest Overall | — | View on Amazon |
| 2 | 2. LANVUEO TSAP780Complete 7-Foot Kit | 15.4 lb | View on Amazon |
| 3 | 3. Siftary TSAP780One-Year Warranty | — | View on Amazon |
| 4 | 4. BDYIFTXD TSAP780Support Included | 16.1 lb | View on Amazon |
| 5 | 5. Kozlira TSAP780Seven-Foot Kozlira Replacement | 15.4 lb | View on Amazon |
| 6 | 6. TRUCFUSION TSAP780Seven-Foot Utility Trailer Fit | 15.37 lb | View on Amazon |
| 7 | 7. LEVANLIGHT TSAP780Seven-Foot Trailer Compatibility | — | View on Amazon |
| 8 | 8. HCYCOO TSAP780Seven-Foot Door Weight Match | — | View on Amazon |
| 9 | 9. Kozlira TSAP660Best 6-Foot Fit | 15.07 lb | View on Amazon |
| 10 | 10. TRUCFUSION TSAP660Six-Foot Lower-Weight Ramps | 12.62 lb | View on Amazon |
Detailed Reviews: Best Ramp Door Kit For Enclosed Trailer
Why it ranks #1: Its 80 lb spring is rated for up to 160 lb, and the listed package includes drums, stainless cables, brackets, rollers, and winding bars.
Winding bars are included with this Kozlira TSAP780, alongside an 80-pound clockwise-wind spring, distinguishing its listed installation components from kits that omit bars. The paired 12-foot-travel drums and stainless winding cables target seven-foot cargo-trailer ramp doors with a stated capacity of 160 pounds.
The 80-pound spring and 160-pound capacity establish the intended lift range, while left and right drums each provide 12 feet of cable travel for the ramp-door system. Two 150-inch stainless winding cables, roof-mount bearing brackets, and nylon rollers add cable and mounting components. Winding rods and non-slip gloves are listed, helping cover spring-related work. The torsion tube shaft is explicitly not included, so the package does not supply every structural part of the assembly.
- 80-pound clockwise-wind torsion spring
- 160-pound stated load capacity
- Includes winding bars and non-slip gloves
- 12-foot drums, stainless cables, brackets, and rollers included
- Torsion tube shaft is not included.
Skip it if you need the torsion tube shaft supplied with your spring kit; Kozlira excludes it from this package.
This suits owners of seven-foot cargo trailers seeking an 80-pound spring system with winding bars and gloves included. It covers many lift components, but the torsion tube shaft remains a separate requirement for the repair.
Full product details
| Brand | Kozlira |
|---|---|
| Color | Black |
| Included Components | 1 * 5.5 x 50 x 700mm 80 lb Torsion Spring, Clockwise (Right) Wind; 1 * Left Side Cable Drum with 12’ Cable Travel Capacity; 1 * Right Side Cable Drum with 12’ Cable Travel Capacity; 2 * 150” x 1/8” Stainless Steel Winding Cables; 2 * Bearing Brackets for Roof Mounting; 2 * Nylon Rollers; 2 * Torsion |
| Load Capacity | 160 pounds |
| Manufacturer | Kozlira |
| Part Number | TSAP780 |
| Manufacturer Warranty Description | 1 year. |
| Material | Metal |
| Model Number | TSAP780 |
Listed on Amazon as: TSAP780 Ramp Door Spring Kit with Winding Bars for 7' Wide Cargo Trailer – 80 lb Torsion Spring Repair Assembly Replacement Rear Ramp Door Assist System for Cargo Enclosed Trailers
View on AmazonWhy it ranks #2: The 7-foot 80 lb system is rated for 160 lb and lists spring, drums, cables, brackets, and rollers, with a 180-day warranty.
A stated 160-pound load capacity and a complete listed component set make LANVUEO's TSAP780 a practical candidate for many seven-foot cargo-trailer ramp repairs. The 80-pound clockwise-wind spring works with 12-foot drums and stainless winding cables to support the specified door application.
LANVUEO pairs its 80-pound spring with left and right cable drums offering 12 feet of travel, plus two 150-inch stainless winding cables. The product describes compatibility with most seven-foot enclosed cargo trailers and a 160-pound total capacity, giving buyers both an application and a weight limit to check. Roof-mount bearing brackets and nylon rollers are also listed, helping cover mounting and cable guidance. The included-components list does not identify winding rods, so installation-tool needs should be considered separately.
- 80-pound clockwise-wind torsion spring
- 160-pound stated load capacity
- Two drums with 12-foot cable travel
- 150-inch stainless cables, roof brackets, and nylon rollers included
- Winding rods are not listed among the included components.
Skip it if you require winding rods in the package; they are not identified in LANVUEO's included-components list.
This is a fit for owners of many seven-foot enclosed cargo trailers who need an 80-pound spring system rated to 160 pounds. Check the listed components against your installation needs, particularly for winding rods.
Full product details
| Brand | LANVUEO |
|---|---|
| Included Components | 1 * 5.5 x 50 x 700mm 80 lb Torsion Spring, Clockwise (Right) Wind; 1 * Left Side Cable Drum with 12’ Cable Travel Capacity; 1 * Right Side Cable Drum with 12’ Cable Travel Capacity; 2 * 150” x 1/8” Stainless Steel Winding Cables; 2 * Bearing Brackets for Roof Mounting; 2 * Nylon Rollers; 2 * Bolts w |
| Dimensions | 39.97"L x 6.66"W x 3.94"H |
| Item Weight | 15.4 pounds |
| Load Capacity | 160 pounds |
| Manufacturer | LANVUEO |
| Part Number | TSAP780 |
| Manufacturer Warranty Description | 180 days. |
| Model Number | TSAP780 |
Listed on Amazon as: TSAP780 80lb Torsion Spring Kit for 7' Cargo Trailer Ramp Door
View on AmazonWhy it ranks #3: This 7-foot kit specifies an 80 lb spring for doors around 160 lb and includes 150-inch stainless cables and mounting hardware; the torsion bar is excluded.
An 80-pound right-hand torsion spring is specified for ramp doors around 160 pounds total weight, giving one person lift assistance with less effort opening and closing. Siftary packages it with cable drums, long stainless cables, and mounting hardware for a seven-foot enclosed cargo-trailer replacement.
The paired 12-foot cable drums and two 150-inch stainless steel lift cables connect the spring assembly to the ramp-door mechanism, while included mounting hardware supports replacement work. Siftary describes the system as suited to a door around 160 pounds total, or approximately 80 pounds hinged weight, and says it helps one person open and close the ramp with less effort. The torsion bar is not included, so this is not a complete shaft-and-spring assembly.
- 80-pound right-hand torsion spring
- Specified for doors around 160 pounds total
- Pair of 12-foot cable drums
- Two 150-inch stainless steel lift cables and mounting hardware
- Torsion bar is not included.
Skip it if you need a kit that supplies the torsion bar too; Siftary explicitly excludes it.
Choose this for a seven-foot enclosed cargo trailer with an approximately 160-pound ramp door when one-person lifting assistance is the goal. It suits buyers who already have the torsion bar or will source that component separately.
Full product details
| Brand | Siftary |
|---|---|
| Compatible with Vehicle Type | Trailer |
| Included Components | Ramp Door Spring Kit |
| Manufacturer | Siftary |
| Part Number | TSAP780 |
| Manufacturer Warranty Description | 1 year |
| Material | Stainless Steel |
| Model Number | TSAP780 |
Why it ranks #4: It lists an 80 lb spring, 12-foot-travel drums, 150-inch stainless cables, brackets, rollers, and winding rods, plus 24/7 support and a one-year service claim.
A complete 80-pound right-wind spring package pairs 12-foot-travel drums with 150-inch stainless cables, giving owners of many seven-foot cargo trailers the core parts for a ramp-door repair. Its listed 160-pound load capacity identifies the door-weight range this assembly is intended to assist.
The kit includes left and right cable drums with 12 feet of travel, plus two 150-inch stainless cables, connecting the spring system to a standard ramp-door lift path. Roof-mount bearing brackets and nylon rollers are included alongside winding rods, bolts, nuts, and gloves, so the package covers several installation components. The 80-pound spring and 160-pound stated capacity suit the listed application, but the torsion tube shaft is explicitly not included and must be addressed separately.
- 80-pound clockwise-wind torsion spring
- 12-foot-travel left and right drums
- Two 150-inch stainless steel cables
- Includes winding rods, brackets, rollers, bolts, nuts, and gloves
- Torsion tube shaft is not included.
Skip it if you need the torsion tube shaft in the same package; this kit explicitly leaves it out.
For owners repairing a seven-foot cargo-trailer ramp door with an 80-pound spring system, this kit groups cables, drums, and mounting pieces together. Check that the separate torsion tube shaft is already available before choosing it.
Full product details
| Brand | BDYIFTXD |
|---|---|
| Included Components | Ramp Door Spring Kit |
| Dimensions | 39.37"L x 6.69"W x 4.31"H |
| Item Weight | 16.1 pounds |
| Load Capacity | 160 pounds |
| Manufacturer | BDYIFTXD |
| Part Number | Ramp Door Spring Kit |
| Manufacturer Warranty Description | No. |
| Material | Metal |
| Model Number | PDM-2026-TJ6 |
Listed on Amazon as: TSAP780 Ramp Door Spring Kit for 7' Wide Cargo Trailers
View on AmazonWhy it ranks #5: Its 7-foot 80 lb kit includes cable drums, 150-inch stainless cables, brackets, and rollers; the listing says the torsion bar is not included.
An 80-pound right-wind torsion spring and paired 12-foot-travel drums give this Kozlira kit its core seven-foot trailer repair configuration. Two 150-inch stainless winding cables, roof brackets, and nylon rollers round out the listed parts, while the specified 160-pound capacity sets a useful door-weight boundary.
The clockwise-wind spring works with left- and right-side drums that each provide 12 feet of cable travel, supporting the listed seven-foot cargo-trailer application. Two 150-inch stainless cables link the lift components, and roof-mount bearing brackets and nylon rollers add mounting and guiding pieces to the package. Kozlira also specifies metal construction. Its product note says the bar is not included, so buyers should not assume the package supplies the winding bar or torsion tube shaft.
- 80-pound clockwise-wind torsion spring
- Paired drums with 12-foot cable travel
- Two 150-inch stainless steel cables
- Includes roof brackets, nylon rollers, and bolts
- Winding bar is not included.
Skip it if you need winding bars supplied with the kit; Kozlira's product note says the bar is not included.
This fits buyers repairing a seven-foot cargo-trailer ramp door with an 80-pound spring system and seeking the listed cables, drums, brackets, and rollers together. Plan separately for the missing bar and tube shaft.
Full product details
| Brand | Kozlira |
|---|---|
| Item Weight | 15.4 pounds |
| Manufacturer | Kozlira |
| Part Number | TSAP780 |
| Package Dimensions | 39.97 x 6.69 x 3.94 inches |
Listed on Amazon as: TSAP780 Ramp Door Spring Kit for 7' Wide Cargo Trailer – 80 lb Torsion Spring Repair Assembly with Cables and Drums – Replacement Rear Ramp Door Assist System for Cargo Enclosed Trailers
View on AmazonWhy it ranks #6: This kit is specified for most 7-foot trailers with an 80 lb spring system and ramp doors up to 160 lb, though package details are less complete.
Compatibility with most seven-foot enclosed cargo trailers, utility trailers, and small car haulers makes this TRUCFUSION kit a broad-fit option for owners using an 80-pound ramp-door spring system. Its 160-pound door rating supports one-person operation within the stated hinged-weight limit.
The 80-pound lift-assist rating is paired with a maximum ramp-door weight of 160 pounds, based on an 80-pound hinged weight. That gives buyers a concrete capacity boundary when matching the assembly to a trailer door. Included 12-foot cable drums are identified for standard ramp doors, helping connect the spring system to a conventional cable layout. Heavy-duty steel components and stainless cables are cited for outdoor use, while the product information does not specify every included mounting component.
- Fits most seven-foot enclosed cargo trailers
- Also listed for utility trailers and small car haulers
- Rated for doors up to 160 pounds
- 12-foot cable drums for standard ramp doors
- The stated 160-pound door limit rules out heavier ramps.
Skip it if you have a ramp door above 160 pounds; this assembly's stated capacity is limited to that weight.
This suits owners of seven-foot cargo trailers, utility trailers, or small car haulers with an 80-pound spring system and a door within its 160-pound limit. Review the package contents before planning an installation.
Full product details
| Brand | TRUCFUSION |
|---|---|
| Item Weight | 15.37 pounds |
| Item model number | 10703130 |
| Manufacturer | TRUCFUSION |
| Package Dimensions | 30 x 7 x 5 inches |
Listed on Amazon as: TSAP780 Trailer Ramp Rear Door Spring Kit for 7ft Wide Cargo Trailer
View on AmazonWhy it ranks #7: It targets 7-foot trailers using an 80 lb system and 12-foot cable drums, and lists a one-year manufacturer warranty; detailed contents are limited.
Compatibility with many seven-foot enclosed cargo trailers, utility trailers, and small car haulers gives LEVANLIGHT's TSAP780 a broad stated application. Its 80-pound spring system and 12-foot cable drums target standard rear ramp-door configurations, helping buyers identify the intended setup before selecting a replacement.
The product identifies an 80-pound trailer door spring system and says its 12-foot cable drums fit standard rear ramp-door configurations, linking the spring rating to a familiar layout. The listed fit includes many seven-foot enclosed cargo trailers, utility trailers, and small car haulers. LEVANLIGHT advises checking trailer dimensions and door weight before ordering, which matters because the provided information does not state a specific maximum door weight or enumerate the kit's individual components.
- Fits many seven-foot enclosed cargo trailers
- Also listed for utility trailers and small car haulers
- Specified for an 80-pound spring system
- 12-foot cable drums for standard ramp-door configurations
- The supplied product details do not state a maximum door weight.
Skip it if you need a stated maximum door-weight rating before choosing; LEVANLIGHT's supplied details do not provide one.
This can suit owners of seven-foot trailers or small car haulers using an 80-pound spring system and standard 12-foot drum layout. Check your door dimensions and weight, since no maximum is specified here.
Full product details
| Brand | LEVANLIGHT |
|---|---|
| Included Components | 1*Ramp Door Spring Kit |
| Manufacturer | LEVANLIGHT |
| Part Number | TSAP780 |
| Manufacturer Warranty Description | 1 year manufacturer. |
| Model Number | TSAP780 |
Listed on Amazon as: TSAP780 Trailer Ramp Door Spring Kit for 7 ft Enclosed Cargo Trailers
View on AmazonWhy it ranks #8: Its listed 80 lb right-wind spring system suits 7-foot trailers and doors up to about 160 lb, with drums, cables, brackets, and rollers.
HCYCOO specifies compatibility with seven-foot enclosed cargo trailers and smaller car haulers, with support for ramp doors up to approximately 160 pounds. Its package lists the spring, paired drums, stainless cables, and mounting pieces, making the stated repair scope easy to assess.
The 80-pound right-wind torsion spring is rated for a door totaling about 160 pounds, or an 80-pound hinged section, giving buyers a specific weight match. Paired 12-foot-travel cable drums work with two 150-inch stainless cables, while roof-mount bearing brackets and nylon rollers complete several parts of the lift path. Bolts and nuts are also listed. This component set is aimed at the stated seven-foot trailer and smaller-car-hauler applications, not heavier ramp doors.
- 80-pound right-wind torsion spring
- Rated for ramp doors up to approximately 160 pounds
- Paired drums with 12-foot travel
- Includes stainless cables, brackets, rollers, bolts, and nuts
- The approximately 160-pound door limit excludes heavier ramps.
Skip it if you need to lift a ramp door heavier than approximately 160 pounds; this kit is rated to that limit.
Choose this for a seven-foot enclosed cargo trailer or smaller car hauler with a ramp door around 160 pounds or less. Its listed cables and mounting pieces make the package scope clear, but heavier doors exceed its stated limit.
Full product details
| Brand | HCYCOO |
|---|---|
| Included Components | 1X Ramp Door Spring Kit |
| Load Capacity | 160 pounds |
| Manufacturer | Solarhome |
| Part Number | TSAP780, TSAP660 |
| Manufacturer Warranty Description | 12 months. |
| Model Number | TSAP780, TSAP660 |
Listed on Amazon as: TSAP780 Ramp Door Spring Kit 7ft Cargo Trailer 80lb Torsion Spring Repair w/Cables Drums
View on AmazonWhy it ranks #9: The 60 lb right-wind spring and 12-foot-travel drums suit a 6-foot trailer system; the package also lists stainless cables, brackets, rollers, and winding bars.
A 60-pound clockwise-wind torsion spring sets this Kozlira assembly apart for six-foot-wide cargo-trailer ramp doors, rather than the heavier 80-pound systems. Its paired 12-foot-travel cable drums and 150-inch stainless cables provide the lift-system components for a compatible rear-door repair.
Kozlira lists a 60-pound spring and drums with 12 feet of cable travel, a combination intended for the six-foot trailer application named in the title. Two 150-inch stainless winding cables connect the system across the ramp-door setup, while roof-mount bearing brackets and nylon rollers provide additional mounting and guiding components. Winding bars and non-slip gloves are included for spring work. The torsion tube shaft is not included, so buyers need to account for that part separately.
- 60-pound right-hand torsion spring
- Two drums with 12-foot cable travel
- Two 150-inch stainless steel cables
- Includes winding bars, roof brackets, rollers, and gloves
- Torsion tube shaft is not included.
Skip it if you need an 80-pound spring system for a seven-foot trailer; this model is specified with a 60-pound spring.
For a six-foot-wide cargo trailer using a 60-pound ramp-door spring system, this kit brings together winding bars, cables, drums, and mounting pieces. It is not the right spring rating for the listed seven-foot application.
Full product details
| Brand | Kozlira |
|---|---|
| Item Weight | 15.07 pounds |
| Item model number | TSAP660 |
| Manufacturer | Kozlira |
| Part Number | TSAP660 |
| Model | TSAP660 Ramp Door Spring Kit with Winding Bars |
| Dimensions | 10 x 2 x 50 inches |
Listed on Amazon as: TSAP660 Ramp Door Spring Kit with Winding Bars for 6' Wide Cargo Trailer – 60 lb Torsion Spring Repair Assembly Replacement Rear Ramp Door Assist System for Cargo Enclosed Trailers
View on AmazonWhy it ranks #10: This is a 6-foot-specific option for a 60 lb spring system and doors up to 120 lb, so it is less suitable for the common 7-foot fit.
A 60-pound spring rating and 120-pound maximum ramp-door weight make this TRUCFUSION kit the lower-capacity choice for six-foot-wide cargo trailers. It also lists compatibility with utility trailers and small car haulers using a 60-pound spring system, extending its stated fit beyond enclosed cargo trailers.
The 60-pound lift-assist system is rated for doors up to 120 pounds, with a 60-pound hinged weight, giving buyers a clear limit for matching the spring to their ramp. TRUCFUSION includes 12-foot cable drums for standard ramp doors, supporting a familiar cable layout in compatible trailers. Heavy-duty steel components and stainless cables are cited for long-term outdoor use. The product information names the spring-system application but does not detail the full package contents.
- 60-pound lift-assist spring system
- Rated for ramp doors up to 120 pounds
- Fits most six-foot enclosed cargo trailers
- 12-foot cable drums for standard doors
- Its 120-pound door limit excludes heavier ramps.
Skip it if you have a ramp door above 120 pounds; this six-foot kit is rated only up to that weight.
For a six-foot enclosed cargo trailer, utility trailer, or small car hauler with a 60-pound spring system, this offers a clearly stated 120-pound door limit. Choose another rating for heavier ramp doors.
Full product details
| Brand | TRUCFUSION |
|---|---|
| Item Weight | 12.62 pounds |
| Item model number | 10703131 |
| Manufacturer | TRUCFUSION |
| Package Dimensions | 24.5 x 6.5 x 6 inches |
Listed on Amazon as: TSAP660 Trailer Ramp Rear Door Spring Kit for 6 ft Wide Cargo Trailer
View on AmazonAvoid mismatched springs and incomplete repairs
A spring rating and trailer width are not enough to confirm a safe match; compare the existing system’s spring size, winding direction, cable routing, and hardware arrangement before ordering. Most 7-foot options here use an 80 lb right-wind spring and are described for doors up to about 160 lb, while the two TSAP660 kits are for 6-foot trailers with 60 lb systems and up to 120 lb doors. A width match alone can still be misleading if the existing hardware differs.
Also check what the kit leaves out: the Kozlira TSAP780 listings and the BDYIFTXD kit say the torsion tube shaft is not included, while Siftary explicitly excludes the torsion bar. A missing or incompatible tube can prevent an otherwise suitable kit from completing the repair.
Confirm the actual components needed before taking the old system apart.
Why winding tools and spring work matter
Winding bars can make a kit more complete, but they do not make torsion-spring installation risk-free. Among these products, the Kozlira TSAP780 with Winding Bars lists winding bars and gloves, and the BDYIFTXD TSAP780 lists winding rods and gloves; the standard Kozlira TSAP780 does not list bars. The TSAP660 Kozlira kit also includes winding bars.
These package differences matter if you do not already have compatible tools, but they are not evidence that installation is simple or that the tools suit every setup. A loaded torsion spring stores substantial force, and incorrect winding or release can cause injury or damage.
If you are unfamiliar with this work, have a qualified trailer technician handle the spring, or at minimum follow the kit maker’s instructions and verify the required tools and procedure before beginning.
How to Choose an Enclosed-Trailer Ramp Door Kit
Trailer width and spring-system match
Choose a kit that matches both trailer width and the existing spring system, not width alone. Most listings here are TSAP780 kits for 7-foot trailers with an 80 lb spring; the TRUCFUSION and Kozlira TSAP660 options instead specify 6-foot trailers and 60 lb systems. The TSAP780 kits are generally described for enclosed cargo trailers, and some also mention utility trailers or small car haulers.
A 7-foot trailer owner with an 80 lb setup should start with the TSAP780 options, while a 6-foot trailer owner should consider the TSAP660 products. Check your existing spring markings and layout before buying, because the listing descriptions do not establish compatibility with every trailer or hardware configuration.
Spring rating and ramp-door weight
Match the spring system rating to your door’s actual weight and the manufacturer’s stated fit. The 80 lb TSAP780 products are described for ramp doors up to about 160 lb, with Siftary clarifying approximately 80 lb hinged weight. The 60 lb TSAP660 products are described for doors up to 120 lb, or about 60 lb hinged weight.
Buyers with a verified 7-foot, 80 lb setup should look at the TSAP780 choices; those with a verified 6-foot, 60 lb system should look at TSAP660. Verify how the listing defines door weight against your trailer’s requirements.
Included hardware and omitted parts
Check the package list for the parts and tools your repair requires, especially the torsion tube and winding bars. The Kozlira TSAP780 with Winding Bars lists drums, 150-inch stainless cables, roof-mount brackets, rollers, bars, and gloves, while the LANVUEO TSAP780 lists the core spring-and-cable components and a 180-day warranty. Several listings explicitly exclude a shaft or bar: Kozlira says its TSAP780 does not include the torsion tube shaft, and Siftary says the torsion bar is not included.
The BDYIFTXD listing also excludes the tube shaft but includes winding rods. Buyers who already have a sound tube and tools can choose a simpler package; those needing tools should favor a listing that names them and still confirm every required part.
Which ramp door kit should you choose?
For a verified 7-foot trailer with an 80 lb spring system, choose the Kozlira TSAP780 with Winding Bars if you want the most fully itemized package, including winding bars, cables, drums, brackets, rollers, and gloves. The LANVUEO TSAP780 is another well-documented option, with a listed 160 lb capacity and 180-day warranty. If warranty duration matters, the Siftary TSAP780 lists one year, but its torsion bar is excluded.
Owners of a 6-foot trailer with a 60 lb system should consider the Kozlira TSAP660 or TRUCFUSION TSAP660 instead; both are described for doors up to 120 lb. Before ordering any option, confirm door weight, spring direction, tube requirements, and included hardware against your trailer.
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Frequently Asked Questions
How do I measure an enclosed trailer ramp door and identify its spring system?
Measure the ramp door and confirm the trailer’s width before selecting a kit; the listed options include kits for 6-foot and 7-foot trailers. Check the existing spring’s weight rating and wind direction, and verify the torsion tube and hardware requirements. Compare those details with the kit listing before ordering.
Can I replace a ramp door torsion spring without professional help?
It depends on your experience and ability to work safely with the spring system. Torsion springs can be under substantial tension, so do not proceed unless you understand the system and have the correct tools and instructions. If you are unsure about the spring direction, tube, or winding procedure, consult a qualified trailer professional.
What should I inspect if a replacement ramp door kit still lifts unevenly?
First verify that both sides use compatible hardware and that the cables, drums, brackets, and rollers are correctly installed and aligned. Recheck the spring direction and rating against the trailer’s original setup. Also confirm that the torsion tube is suitable and that the door weight and trailer configuration match the kit requirements.
Which kit should I consider for a 6-foot trailer with a 60 lb spring system?
Consider the Kozlira TSAP660 or TRUCFUSION TSAP660, both described for 6-foot trailers with 60 lb systems and doors up to 120 lb. Before choosing, confirm your door weight, spring direction, tube requirements, and included hardware. A listed fit should not replace checking your trailer’s actual configuration.
What included parts should I compare before ordering a ramp door kit?
Compare the listed spring, cables, drums, brackets, rollers, winding bars, and any other hardware you need. The Kozlira TSAP780 with Winding Bars lists these components, while its torsion tube shaft is not included. Check each product’s package details against your existing trailer parts to identify anything you must retain or source separately.
Final Words
For a verified 7-foot trailer with an 80 lb spring system, the Kozlira TSAP780 with Winding Bars is the strongest overall fit in this group, with a fully itemized package and a listed one-year warranty. Consider the Kozlira or TRUCFUSION TSAP660 for a compatible 6-foot setup. Before ordering any kit, confirm door weight, spring direction, tube requirements, and included hardware; the Kozlira TSAP780’s torsion tube shaft is not included.








