Exterior Components› Body Panels and Components

Vega Motorsports

Focus ST V1 Rear Diffuser

$279.99

SKU: FOCUS ST DIFFUSER (V1)

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Vega Motorsports FOCUS ST DIFFUSER (V1) is a rear diffuser designed for the Focus ST. It is crafted from medical-grade aluminum alloy, making it lightweight, durable, and non-corrosive. The diffuser is cut with precision using a CNC machine and is available with two fin styles.
Show original supplier description
The Vega Motorsports FOCUS ST DIFFUSER (V1) is a rear diffuser meticulously crafted from high-end medical-grade aluminum alloy. This material choice ensures the diffuser is not only lightweight and durable but also corrosion-resistant and 100% recyclable. Designed using professional CAD software and cut with precision via an industrial CNC machine, the diffuser is powder-coated in-house. This V1 diffuser is designed to fit the 2013-2018 Ford Focus ST models equipped with the factory rear bumper. It features a choice of two fin styles, STYLE 1 or STYLE 2, and includes all necessary mounting brackets and stainless steel hardware for installation. The product page notes that drilling is required for installation, and provides an online installation guide. Buyers can choose between a raw, unpainted finish or a satin black powder coat. It is important to note that ordering the raw (unpainted) option will require the client to perform sanding and coating themselves, and raw aluminum pieces may arrive with minor stains or scratches. Due to the custom, made-to-order nature of these diffusers, no refunds are offered. Professional installation is highly recommended.
Vehicle Symptoms
  • plain factory rear bumper looks too basic
  • want a more aggressive rear end stance
  • rear diffuser gap looks unfinished under bumper
  • seeking motorsport-inspired rear aero styling
  • stock Focus ST rear lacks visual downforce look
Relevant Conversations
  • Focus ST rear diffuser 2013-2018
  • Vega Motorsports Focus ST V1 diffuser review
  • Focus ST diffuser style 1 vs style 2
  • Focus ST rear diffuser install time DIY
  • Focus ST diffuser with stock bumper fitment
  • Focus ST rear diffuser worth it?
  • Focus ST aftermarket rear diffuser forum
  • Focus ST diffuser powder coat aluminum
  • Focus ST rear bumper diffuser 2016
  • Focus ST diffuser before and after

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

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Specifications

BrandVega Motorsports
Part NumberFOCUS ST DIFFUSER (V1)
CategoryExterior Components
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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.

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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.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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