---
product_id: 180278485
title: "Rear Diffuser Kit V1 Compatible with Dodge Challenger 2015-2021"
brand: "authority motorsport"
price: "A$20"
currency: AUD
in_stock: false
reviews_count: 8
url: https://www.desertcart.com.au/products/180278485-rear-diffuser-kit-v1-compatible-with-dodge-challenger-2015-2021
store_origin: AU
region: Australia
---

# Lightweight at just 2 lbs 4-piece precision fit Aluminum Composite Material for durability Rear Diffuser Kit V1 Compatible with Dodge Challenger 2015-2021

**Brand:** authority motorsport
**Price:** A$20
**Availability:** ❌ Out of Stock

## Summary

> 🚗 Elevate your Challenger’s stance with race-ready style and performance.

## Quick Answers

- **What is this?** Rear Diffuser Kit V1 Compatible with Dodge Challenger 2015-2021 by authority motorsport
- **How much does it cost?** A$20 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/180278485-rear-diffuser-kit-v1-compatible-with-dodge-challenger-2015-2021)

## Best For

- authority motorsport enthusiasts

## Why This Product

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

## Key Features

- • **Miami-Made Quality:** Proudly produced by Authority Motorsport LLC in Miami, combining expert craftsmanship with race-inspired design.
- • **Precision Installation:** Designed for enthusiasts comfortable with minor modifications—requires simple hole drilling for a secure, factory-like fit.
- • **Custom-Fit Aerodynamics:** Tailored 4-piece diffuser fins engineered exclusively for Dodge Challenger 2015-2021, ensuring seamless integration and enhanced rear airflow.
- • **Sleek Satin Black Finish:** Matte black exterior finish adds aggressive style and a stealthy edge to your Challenger’s rear profile.
- • **Premium Lightweight Build:** Crafted from high-grade Aluminum Composite Material, delivering maximum stiffness while shaving off unnecessary weight for peak performance.

## Overview

The Rear Diffuser Kit V1 by Authority Motorsport is a 4-piece, custom-fit aerodynamic upgrade for Dodge Challenger models from 2015 to 2021. Constructed from lightweight yet stiff Aluminum Composite Material and finished in satin black, this kit enhances rear downforce and visual aggression. Installation requires minor bumper modifications, reflecting its precision-engineered design from Miami-based experts.

## Description

Rear Diffuser Kit V1 specially designed and tested for the Dodge Challenger SXT, RT, Hellcat 2015, 2016, 2017, 2018, 2019, 2020 and 2021 stock rear bumper. We only use the best materials, in this case is an Aluminum Compound for added strength and weight saving. *** All hardware needed for installation is included ***

## Features

- Please note: You will have to open holes into the lower rear bumper for installation and take simple measurements.
- 4 Piece Kit Including:
- 4 Rear Diffuser Fins that attach to your stock bumper
- Notice: This is not a 1 piece bumper. This is a multiple parts custom made diffuser specifically designed and produced by Authority Motorsport LLC in Miami Florida to fit this specific vehicle.
- Constructed using an Aluminum Compound material for Stiffness and Weight Saving
- Item weights 2 Lbs and it is 7 inches long

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Authority Motorsport |
| Auto Part Position | Rear |
| Material | ACM - Aluminum Composite Material |
| Color | Satin Black |
| Item Weight | 2 Pounds |
| Vehicle Service Type | Cars |
| Exterior Finish | black |
| Product Dimensions | 8"D x 11"W x 3"H |
| Manufacturer | Authority Motorsport LLC |
| UPC | 664339786846 |
| Item Weight | 2 pounds |
| Item model number | Challv1rd |
| Manufacturer Part Number | Challv1rd |

## Product Details

- **Brand:** Authority Motorsport
- **Auto Part Position:** Rear
- **Material:** ACM - Aluminum Composite Material
- **Color:** Satin Black
- **Item Weight:** 2 Pounds
- **Vehicle Service Type:** Cars
- **Exterior Finish:** black
- **Product Dimensions:** 8"D x 11"W x 3"H
- **Manufacturer:** Authority Motorsport LLC
- **UPC:** 664339786846

## Images

![Rear Diffuser Kit V1 Compatible with Dodge Challenger 2015-2021 - Image 1](https://m.media-amazon.com/images/I/61W5rTAXMTL.jpg)
![Rear Diffuser Kit V1 Compatible with Dodge Challenger 2015-2021 - Image 2](https://m.media-amazon.com/images/I/51r+giUSkgL.jpg)
![Rear Diffuser Kit V1 Compatible with Dodge Challenger 2015-2021 - Image 3](https://m.media-amazon.com/images/I/51e-CBkx8-L.jpg)
![Rear Diffuser Kit V1 Compatible with Dodge Challenger 2015-2021 - Image 4](https://m.media-amazon.com/images/I/61orDutpv0L.jpg)
![Rear Diffuser Kit V1 Compatible with Dodge Challenger 2015-2021 - Image 5](https://m.media-amazon.com/images/I/61DDIuyUK2L.jpg)

## Questions & Answers

**Q: Esto puede caber en un challenger 2014?**
A: Este no, pero tenemos un Kit que si. Dale click al nombre de Authority Motorsport y lo vas a ver.

**Q: it says 220lbs does each piece weigh 55lbs?**
A: No. Doesn’t even weigh 55lbs all together. More around 10 lbs

**Q: Does this fit for 2014 challenger rt?**
A: Not sure if they fit the 14….. , but I think that the 15+ are all the same….

**Q: Are they just fins or it’s a whole one piece install ?**
A: Hey Carlos, this is a Kit of 4 Fins specially designed for the Challenger with Stainless Steel Hardware and full instructions on how to install them. Not a full bumper. Thank you for asking

## Customer Reviews

### ⭐⭐⭐⭐⭐ Straight forward
*by R***N on January 11, 2024*

These diffusers look great. The fitment to the oem bumper is pretty good as well. Measurements the instructions had were alittle off, I measured twice to make sure I was correct but for the outboard diffusers it overlapped the bumper and it would have been impossible to install so I used my own measurements. They are simple to install, take your time with measurements and do it right the first time! Overall great product for the price and quality for them are great too.

### ⭐⭐⭐⭐⭐ Easy install. Great look.
*by E***O on May 26, 2020*

Easy install, all I used for the install was masking taper or correct measurements and a drill to make some holes for the screws. feels securely bolted with all the included parts. Was hesitant to purchase this product due to lack of reviews but I’m happy I did. The price is very reasonable. Would recommend👍

### ⭐⭐⭐⭐⭐ Nice add on..
*by M***M on March 12, 2021*

Seem to be very durable, they are cool in their construction, I didn’t see in the description that these were "sandwiched" in metal, was a surprise to me, but I like them, brought a sweet contrast to my Challenger....

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-02-12*