---
product_id: 143505724
title: "HEAVY DUTY EXTRA WIDE ROOF BOX U BOLT CLAMPS FITTING KIT"
brand: "summit"
price: "$104.77"
currency: USD
in_stock: true
reviews_count: 3
category: "Summit"
url: https://www.desertcart.us/products/143505724-heavy-duty-extra-wide-roof-box-u-bolt-clamps-fitting
store_origin: US
region: United States of America
---

# Fits bars up to 80mm Compact dimensions Set of 4 U-bolts HEAVY DUTY EXTRA WIDE ROOF BOX U BOLT CLAMPS FITTING KIT

**Brand:** summit
**Price:** $104.77
**Availability:** ✅ In Stock

## Summary

> 🔧 Secure Your Adventure with Confidence!

## Quick Answers

- **What is this?** HEAVY DUTY EXTRA WIDE ROOF BOX U BOLT CLAMPS FITTING KIT by summit
- **How much does it cost?** $104.77 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/143505724-heavy-duty-extra-wide-roof-box-u-bolt-clamps-fitting)

## Best For

- summit enthusiasts

## Why This Product

- Trusted summit brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Trusted Brand:** Manufactured by SUMMIT, a name synonymous with quality and reliability.
- • **Versatile Fit:** Designed to accommodate roof bars up to 80mm, perfect for all your adventures.
- • **Easy Installation:** Quick and hassle-free setup means more time for your next journey.
- • **Unmatched Durability:** Engineered for heavy-duty performance, ensuring your gear stays secure.
- • **Lightweight Yet Sturdy:** Weighing only 680g, these clamps provide strength without the bulk.

## Overview

The HEAVY DUTY EXTRA WIDE ROOF BOX U BOLT CLAMPS FITTING KIT by SUMMIT includes a set of 4 robust U-bolts designed to fit larger roof bars up to 80mm. With compact dimensions of 20.9 x 14.7 x 6.7 cm and a lightweight design of 680g, these clamps ensure a secure fit for all your outdoor gear, making them an essential addition for any adventure enthusiast.

## Description

Pack of four wide U-Bolts for roof bars up to 80mm wide x 40mm deep maximum. Kit includes 8 thumbscrews/plates & seals to cover unused holes to prevent water entering roof box.

Review: Happy again - Great product Now i can use the old roof box on the new bars for the new car, Good quality for the price
Review: Simple and effective - I used these to clamp on a custom floor rack I'd made, to fit on a thule roof bars. It's a little tricky to wind the knobs, but I'm very pleased.

## Features

- HEAVY DUTY
- SET OF 4 U BOLTS/CLAMPS
- FOR LARGER ROOF BARS
- FITS BARS UPTO 80MM

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00NAZX0A4 |
| Best Sellers Rank | 276,749 in Automotive ( See Top 100 in Automotive ) 1,558 in Roof Racks |
| Brand | Summit |
| Customer Reviews | 4.7 4.7 out of 5 stars (22) |
| Date First Available | 4 Sept. 2014 |
| Item Weight | 680 g |
| Manufacturer | SUMMIT |
| Manufacturer part number | SUMRCLAMPS |
| Manufacturer reference | SUMRCLAMPS |
| Package Dimensions | 20.9 x 14.7 x 6.7 cm; 680 g |

## Images

![HEAVY DUTY EXTRA WIDE ROOF BOX U BOLT CLAMPS FITTING KIT - Image 1](https://m.media-amazon.com/images/I/4196oWZDOSL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Happy again
*by A***R on 16 August 2025*

Great product Now i can use the old roof box on the new bars for the new car, Good quality for the price

### ⭐⭐⭐⭐⭐ Simple and effective
*by P***L on 13 September 2022*

I used these to clamp on a custom floor rack I'd made, to fit on a thule roof bars. It's a little tricky to wind the knobs, but I'm very pleased.

### ⭐⭐⭐⭐⭐ On time as described
*by A***S on 10 May 2023*

Rather expensive for a few pieces of bent and screwed rod but it was what I needed, so!

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**Shop now:** [https://www.desertcart.us/products/143505724-heavy-duty-extra-wide-roof-box-u-bolt-clamps-fitting](https://www.desertcart.us/products/143505724-heavy-duty-extra-wide-roof-box-u-bolt-clamps-fitting)

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-05-18*