RTR Quarter Splitters (18-21 Mustang - GT & EcoBoost)

Product Information

  • RTR Aggressive Track Inspired Styling
  • Durable Injection Molded TPO Material
  • Features a Grained Texture Finish
  • OEM Fit and Finish
  • Easily Installs with Included Fasteners and 3M Automotive Tape
  • Sold as a Pair; Driver and Passenger Side Included
  • Perfect Match for RTR's Side Rocker Splitters
  • Fits 2018-2021 GT and EcoBoost Ford Mustang Models

Modern Aggressive RTR Styling

These RTR Rear Quarter Panel Splitters were engineered to give your Mustang an aggressive street/track appearance. Designed and developed in conjunction with Vaughn Gittin Jr., these RTR Quarter Splitters are meant to be installed along with RTR's Side Rocker Splitters. Featuring a clean, sleek appearance, these Splitters are the same exact ones available on the 2018 - 2021 Mustang RTR.

High-Quality TPO Construction

RTR manufactures its Rear Quarter Panel Splitters from an injection molded thermal plastic olefin (TPO) material using the original OEM CAD data from Ford to ensure a perfect fit. TPO is an extremely strong material known for its light-weight, superior durability, and impact resistance - making it perfect to withstand the hazards of daily driving. These Splitters are completed in a fine-grained stippled texture for a factory look that helps to hide the appearance of rock and stone impacts.

Straight Forward Installation

RTR's Quarter Panel Splitters were designed to be a simple install with only minor drilling required. These RTR Splitters include all the required hardware needed for an easy straight forward install. Installation can be completed in about an hour with just basic hand tools. Even though drilling is required, these Quarter Panel Splitters can be removed without issue or damage.


These RTR Rear Quarter Panel Splitters are designed to fit the 2018-2021 EcoBoost and GT Ford Mustangs. Driver and passenger side Splitters are included.

What's in the Box:

  • (1) Driver / Left Hand Rear Quarter Splitter
  • (1) Passenger / Right Hand Rear Quarter Splitter
  • (4) Plastic Rivets
  • (1) Adhesion Promoter

Installation Time: (approx) 45 Minutes

Difficulty Level:Simple installation for anyone

RTR Vehicles Military Discount

This offer is eligible for:

Current & former U.S. military, Military spouses & dependents, First responders including law enforcement, fire, and EMS, Federal, state, and local government employees

How it works:

Click the button to claim your discount and you'll be asked to verify your affiliation with GovX ID. Verification is real-time and secure. If you already have a GovX ID account, just log in! After you verify, you'll receive a single-use discount code to apply at checkout. Be sure to copy your code. For future purchases, simply log in with your GovX ID to unlock a new discount code. There is a limit of one discount code per day.

Customer Reviews
5.0 Based on 3 Reviews
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Filter Reviews:
    Merlin B.
    United States United States

    Must have to complete the full splitter package! Aggressive!

    Merlin B.
    United States United States

    Must have to finish the aggressive appearance when adding splitter package

    RTR Vehicles RTR Quarter Splitters (18-21 Mustang - GT & EcoBoost) Review
    United States United States
    As always, I love everything I receive from RTR.

    Fast turn around, good quality product, just the part I needed to finish off my RTR side splitters.


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