RTR

Rear Diffuser

$299.99

SKU: 387381

In Stock
In Stock
Ships by Aug 31
Free Shipping over $200
$100 Minimum Order
30 Days Return

Description

The RTR Rear Diffuser brings Vaughn Gittin Jr.'s signature modern, aggressive styling to your 2015-2017 Ford Mustang GT or EcoBoost. Crafted from OEM-quality, high-pressure injection-molded TPO material, it offers long-lasting durability and features a grained texture for a factory look that helps hide daily driving scuffs and impacts. Installation is described as straightforward, though it does require permanent modification to the stock rear bumper cover to remove the factory diffuser. The process can typically be completed in approximately two hours and requires light to moderate mechanical skill. This unit is compatible with Mustangs that are equipped with or without factory-installed backup sensors, ensuring full functionality of these features. It is crucial to note that this RTR Rear Diffuser is specifically designed for 2015-2017 GT and EcoBoost Mustangs equipped with the factory Premium Chassis Packages only, specifically Trim Levels: 200A/201A/400A/401A. It will not fit base V6 models or Mustangs with the Performance Package. Please refer to comparison images if unsure about your bumper style.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandRTR
Part Number387381
CategoryExterior Components

We’re here — turning wrenches, just like you.

Call us, follow along, or come say hi.

(760) 282-4645 Instagram Google

Buy with Confidence

Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

View Full Return Policy

Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

View Full Shipping Policy