---
product_id: 1294284
title: "CURT 18117 21 x 37-Inch Roof Rack Extension for CURT Rooftop Cargo Carrier 18115"
brand: "curt"
price: "₨124624"
currency: LKR
in_stock: true
url: https://www.desertcart.lk/products/1294284-curt-18117-21-x-37-inch-roof-rack-extension-curt
store_origin: LK
region: Sri Lanka
---

# 21x37 in dimensions 4-inch high walls Easy installation CURT 18117 21 x 37-Inch Roof Rack Extension for CURT Rooftop Cargo Carrier 18115

**Brand:** curt
**Price:** ₨124624
**Availability:** ✅ In Stock

## Summary

> 🚗 Elevate Your Adventure with CURT's Roof Rack Extension!

## Quick Answers

- **What is this?** CURT 18117 21 x 37-Inch Roof Rack Extension for CURT Rooftop Cargo Carrier 18115 by curt
- **How much does it cost?** ₨124624 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.lk](https://www.desertcart.lk/products/1294284-curt-18117-21-x-37-inch-roof-rack-extension-curt)

## Best For

- curt enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last:** Constructed from durable tubular steel with corrosion-resistant finishes.
- • **Effortless Setup:** Quick assembly means more time for adventure and less time for hassle.
- • **Expand Your Horizons:** Transform your CURT rooftop cargo carrier with an additional 6 sq. ft. of space!
- • **Travel with Confidence:** Enhanced 4-inch walls keep your gear secure on the go.
- • **Universal Compatibility:** Easily attaches to most roof rack rails with no extra hardware needed.

## Overview

The CURT 18117 Roof Rack Extension is designed to enhance your CURT rooftop cargo carrier (model 18115) by increasing usable space from 11 sq. ft. to nearly 17 sq. ft. With 4-inch high walls for added security, this extension is easy to install and compatible with most roof rack rails. Made from durable tubular steel and finished with a corrosion-resistant coating, it promises longevity and reliability for all your travel needs.

## Description

CURT 18117 21 x 37-Inch Roof Rack Extension for CURT Rooftop Cargo Carrier 18115

## Features

- EXTENSION. This cargo carrier extension is designed to be used in combination with the CURT car roof rack carrier #18115 (sold separately). It installs easily and increases the usable square footage from 11 sq. ft. to nearly 17 sq. ft
- ENHANCED SECURITY. This rooftop cargo carrier extension has 4-inch high walls to keep items securely in place during travel
- EASY TO USE. Adding cargo space to your vehicle is easy with this extension and the rooftop cargo carrier #18115 (not included). It frees up the inside of your vehicle for other cargo or passengers
- UNIVERSAL FIT. Once installed on the rooftop cargo carrier #18115, the extended carrier securely attaches to most roof rack rails, using simple, universal brackets. This extension piece assembles quickly with no additional hardware needed
- DURABLE BUILD. This roof rack basket extension is constructed from tubular steel to promote high strength and a lightweight design. It is also finished with an E-coat and carbide black powder coat for long-lasting corrosion resistance

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Color | CARBIDE BLACK POWDER COAT |
| Brand | CURT |
| Item dimensions L x W x H | 21 x 37 x 4 inches |
| Is Foldable | No |
| Mounting Type | Power Click |
| OEM Part Number | 18117 |
| Global Trade Identification Number | 00612314181179 |
| Manufacturer | Curt Manufacturing |
| UPC | 612314181179 |
| Model | Roof Rack Extension |
| Item Weight | 9.98 pounds |
| Product Dimensions | 21 x 37 x 4 inches |
| Country of Origin | Taiwan |
| Item model number | 18117 |
| Is Discontinued By Manufacturer | No |
| Exterior | Painted |
| Manufacturer Part Number | 18117 |

## Product Details

- **Color:** CARBIDE BLACK POWDER COAT
- **Brand:** CURT
- **Item dimensions L x W x H:** 21 x 37 x 4 inches
- **Is Foldable:** No
- **Mounting Type:** Power Click
- **OEM Part Number:** 18117
- **Global Trade Identification Number:** 00612314181179
- **Manufacturer:** Curt Manufacturing
- **UPC:** 612314181179

## Images

![CURT 18117 21 x 37-Inch Roof Rack Extension for CURT Rooftop Cargo Carrier 18115 - Image 1](https://m.media-amazon.com/images/I/71+tk-IhffL.jpg)
![CURT 18117 21 x 37-Inch Roof Rack Extension for CURT Rooftop Cargo Carrier 18115 - Image 2](https://m.media-amazon.com/images/I/71uvalbLevL.jpg)
![CURT 18117 21 x 37-Inch Roof Rack Extension for CURT Rooftop Cargo Carrier 18115 - Image 3](https://m.media-amazon.com/images/I/71pb+l5BF-L.jpg)
![CURT 18117 21 x 37-Inch Roof Rack Extension for CURT Rooftop Cargo Carrier 18115 - Image 4](https://m.media-amazon.com/images/I/81syEuUDV8L.jpg)
![CURT 18117 21 x 37-Inch Roof Rack Extension for CURT Rooftop Cargo Carrier 18115 - Image 5](https://m.media-amazon.com/images/I/81L7K8EhOQL.jpg)

## Frequently Bought Together

- CURT 18117 21 x 37-Inch Roof Rack Extension for CURT Rooftop Cargo Carrier 18115
- CURT 18115 Universal 42 x 37-Inch Black Steel Roof Rack Rooftop Cargo Carrier
- CURT 18201 65 x 38-Inch Elastic Cargo Net with Hooks for Roof Basket

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**Shop now:** [https://www.desertcart.lk/products/1294284-curt-18117-21-x-37-inch-roof-rack-extension-curt](https://www.desertcart.lk/products/1294284-curt-18117-21-x-37-inch-roof-rack-extension-curt)

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*Product available on Desertcart Sri Lanka*
*Store origin: LK*
*Last updated: 2026-03-18*