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HAULK DEPOT®

Ramp Door Spring Assist Kit – For 7' Trailer Ramp
SKU: 7-RDSA-KIT
$95.00 USD $95.00 USD
Shipping calculated at checkout.
In stock
Description

The TSAP780 Ramp Door Spring Assist Kit is designed for most 7-foot-wide trailer ramp doors. This easy-to-assemble kit includes all essential spring assist components, allowing you to refit, repair, or build your ramp door mechanism. Conveniently packed in a compact, patent-pending carton for simple storage and shipping. BAR NOT INCLUDED.

Kit Contents:
  • 1x 5.5 x 50 x 700mm (28") 80 lb Torsion Spring – Right (Clockwise) Wind
  • 2x 12" Cable Drums (Left & Right)
  • 2x 150" x 1/8" Stainless Steel Winding Cables
  • 1x Set of Bearing Brackets (Roof Mount)
  • 1x Set of Nylon Rollers
  • 1x Pack of Assembly Hardware
Detailed Information:
Compatibility Most 7' Wide Trailer Ramp Doors
Lift Capacity Up to 160 lbs (total ramp) or 80 lbs (per door leaf)
Spring Type Torsion Spring – 28" – 80 lb – Right Wind
Bar Requirement Not Included – Must be supplied separately
Packaging Patent-Pending Carton – Compact & Shippable
Fitting & Usage:

This kit is engineered to lift ramp doors weighing up to 160 lbs (total) or 80 lbs per hinged section. For proper operation and safety, always match the assist system to the actual door weight, not just width.

Product Overview:

With the TSAP780 Spring Assist Kit, trailer ramp maintenance and assembly are straightforward. This all-in-one solution is ideal for owners, service shops, and manufacturers who want a reliable and easy-to-install ramp door assist system — just add your own bar and you're ready to go.

We want you to be completely satisfied with your purchase. That’s why we offer a hassle-free return policy within 30 days of delivery*. If your item is unused, in original packaging, and eligible for return, you can send it back for a refund or exchange.

*Some exclusions may apply

Some of our products are backed by a 1-year limited manufacturer warranty covering defects in materials and workmanship under normal use. If you experience any issues during this period, we’ll work with you to repair, replace, or resolve it according to warranty terms.*

*Proof of purchase required

Need it fast? We’ve got you covered. Orders confirmed before 3 PM Eastern Standard Time (Monday–Friday) are processed and shipped out the same business day. Orders placed after the cutoff will ship the next business day.
Ramp Door Spring Assist Kit – For 7' Trailer Ramp

Customer Reviews

Based on 12 reviews
83%
(10)
17%
(2)
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(0)
0%
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(0)
M
Mead Finey
Missing a Couple of Nuts

The kit was almost perfect. I was missing two of the smaller nuts for the mounting hardware. I had some spares in my shop, so it wasn't a big deal, but it's something to be aware of. The spring and cables are excellent.

L
Louie Chree
Minor Scratches on the Bearing Brackets

The kit itself is excellent, but one of the bearing brackets had a couple of small scratches. It's just cosmetic, so it doesn't affect the function at all. The spring and cables are top-notch.

E
Ethan Davis
Works Great, Fast Shipping

The kit arrived quickly and was packaged well. All the parts were there and undamaged. It took me a couple of hours to install, but the end result is a ramp that my wife can now open with one hand.

R
Randy Deathridge
Smooth and Silent Operation

My old springs were squealing and rusty. Swapped them out for this kit. The nylon rollers are a great touch—now the ramp opens and closes with no noise at all. Smooth as butter.

M
Marcos Wycliffe
Solid, No-Nonsense Kit

Got this for my enclosed car hauler. The ramp door is heavy, but this kit lifts it without any issues. The instructions were simple, and the final result is a professional-feeling assist system.

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