Jammy TSAP820 Ramp Door Spring Assist Kit – 200 lb Torsion Spring
Part Number / SKU: TSAP820
Heavy-duty spring assist kit for 8-foot-wide trailer ramp doors – includes 200 lb right-hand torsion spring, 12? cable drums, 150? stainless cables, and full mounting hardware.
| Part Number | Spring Rating | Cable Length | Drum Capacity |
|---|---|---|---|
| TSAP820 | 200 lb (Right-Hand / Clockwise) | 150? × 1/8? Stainless Steel | 12? Cable Capacity |
About This Product
The Jammy TSAP820 Ramp Door Spring Assist Kit is designed for 8-foot-wide trailer ramp doors and heavy-duty cargo doors up to approximately 400 lb total weight. The torsion-spring lift system reduces the effort required to raise and lower the ramp while ensuring smooth, safe operation every time.
Product Features
- Includes one 7.0 × 50 × 1220 mm (?48?) torsion spring rated at 200 lb, clockwise (right-hand) wind
- Pair of 12? capacity cable drums (left and right)
- Pair of 150? × 1/8? stainless-steel winding cables
- (3) roof-mount bearing brackets with hardware
- (2) nylon rollers for smooth, quiet function
- Complete hardware pack for installation
- Ideal for 8-foot-wide cargo, car hauler, or utility trailer ramp doors
- OEM Jammy design for reliability and long service life
Important Clarifications
- Drum Capacity: “12? cable drums” indicates cable travel capacity – not 12? physical diameter.
- Cable Length: Each kit includes 150? cables. If shorter lengths are found, inspect and verify before use.
- Compatibility: Suitable for most 8-ft enclosed or cargo trailers – always match spring to door weight, not just width.
- Bar: Mounting bar is not included; reuse an existing bar or source one that matches your application.
Specifications
- Spring Size: 7.0 × 50 × 1220 mm (?48?) – 200 lb torsion spring
- Wind Direction: Clockwise / Right-Hand
- Cables: 150? × 1/8? stainless steel (pair)
- Drum Capacity: 12? cable travel
- Mount Type: Roof-mount bearing bracket set (3-piece)
- Rollers: Nylon (pair included)
- Recommended Door Size / Weight: Up to 8? wide, ?400 lb total door weight
- Manufacturer: Jammy, OEM Supplier
Note: Verify spring wind direction, cable length, and door weight before installation. Follow proper safety procedures when tensioning torsion springs. Mounting bar sold separately.
