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HAULK DEPOT®

Ramp Door Spring Assist Kit – For 8' Trailer Ramp - 33" Spring
SKU: 8-RDSA-KIT
$159.95 USD $159.95 USD
Shipping calculated at checkout.
In stock
Description

The TSAP820 Ramp Door Spring Assist Kit is designed for most 8-foot-wide trailer ramp doors. This heavy-duty kit includes all core components needed to assemble, retrofit, or repair your ramp door spring system. Each set is neatly packed in a compact, patent-pending carton for easy storage and shipping. BAR NOT INCLUDED.

Kit Contents:
  • 1x 6.3 x 50 x 840mm (33") 120 lb Torsion Spring – Right (Clockwise) Wind
  • 2x 12" Cable Drums (Left & Right)
  • 2x 150" x 1/8" Stainless Steel Winding Cables
  • 1x Set of 3 Bearing Brackets (Roof Mount)
  • 1x Set of Nylon Rollers
  • 1x Pack of Assembly Hardware
Detailed Information:
Compatibility Most 8' Wide Trailer Ramp Doors
Lift Capacity Up to 240 lbs (total ramp) or 120 lbs (per door leaf)
Spring Type Torsion Spring – 33" – 120 lb – Right Wind
Bar Requirement Not Included – Must be supplied separately
Packaging Patent-Pending Carton – Compact & Shippable
Fitting & Usage:

This kit is designed to assist with lifting ramp doors weighing up to 240 lbs (total) or 120 lbs per hinged side. Ensure you match the kit to the actual door weight rather than just door width to achieve proper operation and safety.

Product Overview:

The TSAP820 Spring Assist Kit is a reliable and efficient solution for 8-foot trailer ramp doors. Whether you're assembling a new system or replacing worn components, this kit provides everything you need—except the bar—to get the job done efficiently and professionally.

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 8' Trailer Ramp - 33" Spring
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Customer Reviews

Based on 12 reviews
83%
(10)
17%
(2)
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D
Dmitri Volkov
Works Exactly as Advertised

My 8-foot ramp was a beast to lift. This kit made it effortless. The spring tension is just right for my door, and the cables are a good length.

I
Isidoro Masser
Great Kit, Just Be Careful with the Winding

The instructions for winding the spring were clear, but it's a job that requires caution. Once it was set, the door works flawlessly. All components were well-made.

M
Michael Johnson
Strong, Smooth Operation

Installation took me about an hour, and the difference is night and day. The ramp door doesn't slam down anymore. All the parts feel high-quality, not flimsy.

H
Hillery McGlade
Noticeable Improvement in Safety

Before this kit, my ramp was a safety hazard. Now it lowers and raises smoothly and controllably. Peace of mind is worth more than the price.

D
Devlen Wilkison
Missing a Few Bolts

The kit was mostly great, but I was short a couple of small bolts for the brackets. I had some spares, so it wasn't a huge deal, but something to watch for. Otherwise, the spring works perfectly.

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