Thunder 7000 Power Tarp System

The Thunder 7000 Power Tarp System is designed to make covering and uncovering your trailer fast, safe, and effortless. With Thunder’s One-Touch™ technology, you can fully open or close your tarp with a single press of a button — no cranks or cords required.

Every kit is built from high-strength aluminum, weather-sealed components, and proven Thunderstone engineering, ensuring long-lasting performance even in harsh hauling conditions. Whether you need full dual-arm power, flexible rear operation, or a single-arm setup with a roll return, the Thunder 7000 Series has a configuration to fit your trailer perfectly.

Why Choose the Thunder 7000 System

• One-Touch™ Smart Control – open or close your tarp automatically with a single press
• Heavy-Duty Aluminum Construction – corrosion-resistant and lightweight for longer life
• Sealed Motor & Electrical Components – built to handle dust, mud, rain, and debris
• Multiple Configurations – adaptable to standard, tapered, and specialty trailer designs
• Plug-and-Play Wiring – easy installation with Thunder’s color-coded harness system
• OEM Fit & Retrofit Compatible – ideal for new installations or replacement of existing systems

Available Configurations

All kits include premium Thunder hardware, brackets, wiring, and mounting components. Choose the kit that best suits your trailer setup:

102745-01 – Dual Arm Kit (Mill Finish)

Full-power dual arm system for maximum control.

This kit includes both front and rear powered arms, offering smooth, synchronized motion on both sides. It’s the go-to solution for operators who want full automation and balanced tarp performance across the entire trailer.

• Best for: Standard trailers, grain hoppers, dump trailers
• Finish: Mill aluminum
• Includes: Front and rear arms, mounting hardware, motor assembly, wiring harness

104120-01 – Rear Rotary Flex Arm Kit

Flexible rear arm design for uneven or angled trailers.
The rotary flex arm absorbs stress and allows pivot movement for trailers with curved or angled rear frames. It maintains consistent tarp tension even when the trailer geometry isn’t perfectly straight.

• Best for: Trailers with angled or irregular rear ends
• Design: Flex-pivot assembly for better clearance
• Benefit: Reduces strain and improves system longevity on non-standard builds

102748-01 – Single Arm Kit with Reel Roll Return

One powered arm with a reel return assist for smooth retraction.
Ideal for operators who only need powered motion on one side, this setup uses a reel-based roll return to guide and tension the tarp as it rolls in or out. It’s a great choice for partial upgrades or lightweight trailers.

• Best for: Light-duty trailers or partial system upgrades
• Operation: One-side powered with return assist
• Benefit: Lower cost and simpler install, with reliable tarp alignment

Comparison Table

Technical Overview

Installation Notes

Each Thunder 7000 kit includes a full mounting hardware pack, wiring harness, and illustrated installation guide.
System components are interchangeable within the Thunder 7000 family, so you can easily upgrade or replace arms later if your trailer configuration changes.

Tarps are sold separately

• Shop grain trailer tarps

Simplify Your Tarp Operation

Whether you need complete automation, flexible rear control, or a single-arm power assist, the Thunder 7000 Series delivers unmatched performance and reliability — built for professional haulers who value both quality and convenience.

PDF Downloads:

• Thunder 7000 Brochure
• Installation Instructions
• Operation Instructions

Replacement Parts Available

• Browse replacement parts