TSAP780 Ramp Door Spring Kit for 7 Foot Wide Cargo Trailers, 80 Pound Torsion Spring Repair Assembly With Cables And Drums, Rear Ramp Door Assist System for Enclosed Trailers
✔️ Complete 80 lb torsion spring kit with cables and drums
The ramp door spring kit provides a durable, torsion-assisted lift for 7 ft wide enclosed trailers. It improves ramp door control and lifting ease for rear doors on enclosed trailers and car haulers. Package includes: 1 × 5.5 x 50 x 700 mm 80 lb torsion spring (clockwise wind) with equivalent 0.22 x 2.00 x 27.56 in, left and right cable drums with 12 ft (3.66 m) cable travel, 2 × 150 in × 1/8 in (3810 mm × 3.175 mm) stainless steel winding cables, 2 bearing brackets for roof mounting, 2 nylon rollers, and bolts with nuts. This kit supports doors up to about 160 lb total weight (≈80 lb hinged section).
✅ 80 lb clockwise-wind torsion spring
✅ Left and right cable drums with 12 ft cable travel capacity
✅ 2 x 150 in × 1/8 in stainless steel winding cables (3810 mm × 3.175 mm)
✅ 2 bearing brackets for roof mounting
✅ 2 nylon rollers
✅ 2 bolts with nuts
✅ Compatible with most 7 ft wide enclosed trailers or smaller car haulers
💡 What is a ramp door spring kit used for in cargo trailers?
A handy, practical answer that applies broadly to most ramp door systems.
- improves lifting ease and ramp control for rear doors on cargo trailers- provides torsion-assisted support to smooth operation during opening/closing
- fits most 7 ft wide trailers and similar car haulers
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