GORILLA GRIP 840316708104

GORILLA GRIP Waterproof Car Roof Bag User Manual

Model: 840316708104 | Brand: GORILLA GRIP

1. Important Safety Information

WARNING: Improper attachment can cause the car roof bag to detach, resulting in an automobile accident. Carefully follow all instructions and warnings. Do not use in severe winds. Do not exceed 75 mph (120 km/h) with a loaded car roof bag on the vehicle roof.

Legal Disclaimer: Not suitable for all vehicles. Check with your vehicle manufacturer prior to purchasing.

2. Product Overview

The GORILLA GRIP Waterproof Car Roof Bag is designed to provide additional storage for your vehicle. It features durable construction and a secure attachment system for various vehicle types.

Key Features:

  • Heavy Duty Built-in Grip Dots: Integrated grip dots on the underside help prevent the bag from shifting and sliding on your car's roof.
  • 100% Waterproof Protection: Constructed from waterproof 500D PVC tarpaulin material with a built-in rain flap and extended zipper flaps to protect contents from water and rain.
  • Weather Resistant: Third-party tested to withstand wind up to 75 MPH and extreme temperatures from -30°F to 140°F. UV protected to resist fading.
  • Large Capacity: This model offers 20 cubic feet of storage space, measuring 51 inches x 39 inches x 17 inches.
  • Versatile Attachment: Designed for use with or without roof rails, including 6 metal door hooks for vehicles without rails.
GORILLA GRIP Car Roof Bag on a vehicle roof, highlighting features like grip dots, waterproofing, UV protection, and large capacity.

Image: Overview of the GORILLA GRIP Car Roof Bag's main features.

3. Setup and Installation

Proper installation is crucial for the safety and performance of your GORILLA GRIP Car Roof Bag. Follow these steps carefully.

3.1 Preparing the Roof Bag

  1. Unpack the roof bag and ensure all components are present: roof bag, 8 attachment straps, 6 metal door hooks, storage bag, and combination lock.
  2. Place the empty roof bag on your vehicle's roof, centered and oriented correctly.

3.2 Securing the Roof Bag (With Roof Rails)

If your vehicle has existing roof rails, use the provided attachment straps to secure the bag.

  1. Load the bag with your items (see Section 4.1 for loading guidelines).
  2. Thread the attachment straps through the buckles on the bag and around your vehicle's roof rails.
  3. Tighten all 8 straps evenly to ensure the bag is firmly secured and does not shift.
GORILLA GRIP Car Roof Bag installed on a vehicle with roof rails and on a vehicle without roof rails, demonstrating versatility.

Image: Roof bag installation on vehicles with and without roof rails.

3.3 Securing the Roof Bag (Without Roof Rails)

If your vehicle does not have roof rails, use the included metal door hooks.

  1. Load the bag with your items (see Section 4.1 for loading guidelines).
  2. Pull Back Weather Stripping: Open your car door and gently pull back the black rubber weather stripping along the top of the door frame. Important: If the weather stripping is glued and cannot be pulled back, this method cannot be used.
  3. Hook Metal Clip to Car Door's Frame: With the weather stripping pulled back, hook the metal door hook onto the car's metal frame.
  4. Press Weather Stripping Over Hook: Press the weather stripping back into place over the hooked metal clip.
  5. Repeat for All Hooks: Attach all 6 hooks to the door frames. Install 2 hooks towards the front of the car and 1 towards the back on each side of the car.
  6. Thread the attachment straps through the buckles on the bag and connect them to the metal door hooks.
  7. Tighten all 8 straps evenly to ensure the bag is firmly secured and does not shift.
Step-by-step visual guide for installing the roof bag on a car without roof rails using door hooks.

Image: Detailed steps for installing the roof bag without roof rails.

3.4 Video Installation Guide

Video: This video provides a visual guide to the features and installation of the GORILLA GRIP Car Roof Bag.

4. Operating Instructions

4.1 Loading the Roof Bag

  • Distribute weight evenly inside the bag to maintain vehicle balance.
  • Place heavier items at the bottom and center of the bag.
  • Avoid overfilling the bag. Ensure zippers can close easily without strain.
  • The 20 cubic feet capacity can typically hold 4 suitcases, 4 backpacks, 1 duffle bag, and 2 tents.
Diagram showing the capacity of 15 cubic feet and 20 cubic feet roof bags with examples of luggage items.

Image: Capacity guide for the roof bag.

4.2 Securing Contents and Zippers

  • Ensure all items inside are packed securely to prevent shifting during transit.
  • Close the rust-resistant easy glide zippers completely.
  • Utilize the built-in rain flap and extended zipper flaps to maximize waterproof protection.
  • Use the provided combination lock to secure the zippers, deterring unauthorized access.
Close-up of the easy-pull zippers on the GORILLA GRIP Car Roof Bag.

Image: Easy pull zippers for secure closure.

The GORILLA GRIP Car Roof Bag storage bag and a combination lock.

Image: Included storage bag and combination lock.

4.3 Driving with the Roof Bag

  • Always adhere to the maximum speed limit of 75 mph (120 km/h) when the roof bag is loaded.
  • Periodically check the straps and buckles during long trips to ensure they remain tight and secure.
  • Be aware of increased vehicle height and potential wind resistance, especially in strong crosswinds.

5. Maintenance

Proper maintenance will extend the lifespan of your roof bag.

  • Cleaning: Clean the bag with mild soap and water. Do not use harsh chemicals or abrasive cleaners. Rinse thoroughly and allow to air dry completely before storage.
  • Storage: When not in use, store the roof bag in its provided storage bag in a cool, dry place away from direct sunlight.
  • Inspection: Regularly inspect the bag, straps, and buckles for any signs of wear, tear, or damage. Replace if necessary.

6. Troubleshooting

6.1 Bag Shifting or Sliding

  • Ensure all attachment straps are tightened evenly and securely.
  • Verify that the built-in grip dots on the underside of the bag are in direct contact with the vehicle's roof.
  • Check that the weight inside the bag is evenly distributed.

6.2 Water Leakage

  • Confirm that all zippers are fully closed and the rain flap is properly positioned over them.
  • Inspect the bag for any punctures or tears. While tear-resistant, extreme conditions or sharp objects can cause damage.
  • Ensure the bag is not overfilled, which can strain zippers and seams.

6.3 Excessive Noise During Driving

  • Ensure all excess strap material is neatly tucked away or secured to prevent flapping in the wind.
  • Verify that the bag is fully inflated by the air pressure from driving (if applicable for soft bags) and not creating loose fabric.
  • Check for any loose components or items inside the bag that might be rattling.

7. Specifications

FeatureDetail
BrandGORILLA GRIP
Model Number840316708104
Item Volume20 Cubic Feet
Product Dimensions51 x 39 x 17 inches (L x W x H)
Item Weight12.12 pounds
MaterialPolyvinyl Chloride (PVC) Tarpaulin
Water Resistance LevelWaterproof
Mounting TypeRoof Mount (with/without rails)
Automotive Fit TypeUniversal Fit

8. Warranty and Support

For warranty information or technical support, please refer to the manufacturer's official website or contact their customer service directly. Keep your purchase receipt for any warranty claims.

Manufacturer: Hills Point Industries, LLC

For further assistance, visit the GORILLA GRIP Store on Amazon.

9. Additional Product Videos

Video: A 360-degree view of the GORILLA GRIP Car Roof Bag, showcasing its design from all angles.

© 2026 GORILLA GRIP. All rights reserved.

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