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RTR Side Rocker Splitters (18-20 All)

Market Price $289.99 You Save 14% ($40.00)
Our Price

$249.99 (pair)

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  • Item 402317

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    Features, Video & Details

    • 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
    • Fits All 2018-2020 Ford Mustang Models

    Review & Installation Video

    Review & Install Video

    Modern Aggressive RTR Styling. A set of RTR Side Rocker Splitters will add an aggressive street/track appearance to any 2018-2020 Mustang. Designed and developed by Vaughn Gittin Jr., these RTR Splitters feature a clean, sleek design that adds some substance and modern aggressive aerodynamic styling to the factory rocker panels.

    High Quality TPO Construction. RTR manufactures their Side Rocker 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 rock and stone impacts.

    Simple Bolt-on Installation. RTR's Side Rocker Splitters were designed to be a simple install with no drilling required. These RTR Splitters include the required hardware needed for an easy straight forward install. Installation can be completed in about an hour with just basic hand tools.

    Application. These RTR Side Rocker Splitters are designed to fit all 2018-2020 Ford Mustangs including the EcoBoost, GT and Shelby models. Driver and passenger side Rocker Splitters are included.


    Fitment: 2018 2019 2020 Details

    MPN# 402317

    CA Residents: WARNING: Cancer and Reproductive Harm -

    What's in the Box
    • (1) Driver Side - Left Hand Splitter
    • (1) Passenger Side - Right Splitter
    • (24) Plastic OEM Retainers
    Installation Info
    Will it fit my Mustang?

      Customer Photos (7) Submit Your Photo

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        Questions & Answers (2)

        2 Top Rated Questions

        Will these Splitters hold high speeds for long time? I want to put them on my Mustang in Germany and we usually have higher travelling speeds than in the US and I dont want to have anything flying off at 160mph. Thanks!

        • The RTR Side Rocker Splitters installed correctly will be able to withstand higher driving speeds.

        Helpful (0)

        Will this fit pre18 s550s? they look like the same moldings. Thx

        • The RTR Side Rocker Splitters will not fit pre 2018 Mustangs. RTR Side Rocker Splitters for 15-17 can be found at the link below:

        Helpful (0)
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          Customer Reviews (5) Write a Review

          Overall Rating 4.6

          out of 5 stars

          Installation Time:Less than 1 Hour

          • Fit 5 5
          • Appearance 5 5
          • Bang For Your Buck 4.5 4.5

          • 3/5

            September 13, 2019

            Splitters are what I expect, but missing parts

            I received my order on time, however, the driver side splitter did not have pre-installed 3M-tape. Additionally, the push pins are too small for the 2019 Mustang. I had to reuse the stock push pins. 3-Rating based on missing tape and useless push pins.


            Year: 2019 Submodel: GT

            Helpful (0)

          • 5/5

            Installation Time: Less than 1 Hour

            July 25, 2019

            prefect match for PP2 splitter

            install is easy and matches the factory finish almost exactly of the side skirts. it flows really well with a factory PP2 splitter.


            Year: 2018 Submodel: GT

            Helpful (0)

          • 5/5

            Installation Time: Afternoon

            December 13, 2018

            Nice add on!

            Same porous material as the factory rockers... nice add on.


            Year: 2018 Submodel: GT

            Helpful (5)

          • 5/5

            Installation Time: Less than 1 Hour

            September 12, 2018

            Tight fit for the GT350 but it fits.

            I love the way these look. Gives a bit of an extra dimension to the GT350 rocker panels. I will say the install took a bit of effort. I had to use a rubber mallet to seat the splitter onto the panel. I also reused the stock push pins in their original location. Apart from the four pre-drilled holes you have to do, I made a few more and used the included push pins to further secure it. Overall, the fit was tight so you may need to use a rubber mallet to seat them flush. At least in my experience, that was the case.


            Year: 2018 Submodel: GT350

            Helpful (14)

          • 5/5

            Installation Time: Less than 1 Hour

            June 28, 2018

            Makes the car look lower!

            Install was a breeze, the sideskirts make the Mustang look way lower. Just keep in mind jacking may be an issue if you are low!


            Year: 2018 Submodel: GT

            Helpful (13)

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