Ramp Door Spring Assembly - Dual Cable Dual Spring - M-3 - 96" Tube - 160 lb Door
The CB160D96 is a dual cable, dual spring ramp door assembly for enclosed trailer ramp doors. Built around a 96" tube and a 160 lb door rating, this M-3 style conventional spring setup helps counterbalance the ramp door for smoother, safer lifting and lowering.
R&P Knowledge Hub
Compatibility: This assembly is used on enclosed trailer ramp doors and matches the 96 inch dual-spring / dual-cable conventional layout for doors in the 160 lb class. Market reference for this size class shows fitment for approximately 69" to 96" wide trailer doors.
Vehicle / System Fit: Best suited for enclosed cargo trailer rear ramp doors using a conventional torsion-style spring assist system with dual lift cables.
Installation Notes: Confirm door width, door weight, spring layout, cable routing, mounting points, and shaft length before ordering. Torsion spring assemblies store significant energy and should be installed only by an experienced installer.
Performance Insight: A dual spring setup adds an important safety advantage. If one spring or cable fails, the second spring helps reduce the chance of a sudden free-fall and makes heavy ramp doors easier to control.
R&P Service Insight
Ramp door spring systems are usually replaced after the door becomes harder to lift, loses balance, or starts showing cable and spring fatigue from repeated use.
- Wear: Springs, drums, and cables gradually lose performance through repeated opening and closing cycles
- Exposure: Moisture, grime, and storage conditions can accelerate corrosion and shorten cable life
- Load Stress: Incorrect spring rating or repeated use on a heavy door can overwork the assembly and strain hinges
Features
- Dual cable, dual spring conventional ramp door assembly for enclosed trailer doors
- 96" tube configuration for wide enclosed trailer ramp door applications
- 160 lb door rating to help counterbalance and control door movement
- Dual-spring safety design helps reduce free-fall risk if one side loses support
Specifications
| Specification | Detail |
| Part Number | CB160D96 |
| Type | Ramp door spring assembly |
| Configuration | Dual cable, dual spring, conventional torsion-style assembly |
| Manufacturer Style | M-3 / M3 style assembly |
| Tube Length | 96 in. |
| Door Rating | 160 lbs |
| Application | Enclosed trailer ramp door |
| Typical Door Width Range | 69 in. to 96 in. |
| Cable Length | 150 in. |
| Approx. Overall Assembly Size | 95-5/8 in. wide x 4-3/4 in. tall |
| Material / Finish | Steel spring assembly |
Fitment / Application
| Category | Details |
| Vehicle / System | Enclosed trailer rear ramp door spring assist system |
| Door Width Range | Fits approximately 69" to 96" wide trailer doors |
| Door Weight Class | 160 lb ramp door applications |
| Notes | Verify existing spring style, shaft length, cable length, bracket location, and actual door weight before installation or replacement. |
Included Components
| Quantity | Item |
| 1 | Dual cable dual spring ramp door assembly, M-3 style, 96", rated for 160 lb door |
Verify all specifications, measurements, door weight, and spring-system compatibility before installation. Because torsion spring systems are under load, professional installation is recommended for anyone without prior spring-winding experience.
