FAQs

Please read our FAQs page to find out more.

What is the ETA for Forged wheels?

Most of the forged wheels we offer are custom-built to order for your specific vehicle. Current estimated production time is 5–6 weeks. Certain finishes, such as Chrome, Two-Tone, or Brushed, may require an additional 1–2 weeks for completion.

Your patience ensures a perfect fit and premium quality—thank you for your order!

Will this fit my car?

All of our products come with a **perfect fit guarantee**—if it doesn’t fit, you get your money back!

Can I cancel my order?

All forged wheel purchases are final sale and non-refundable. If you need to cancel a custom order, we can issue store credit for future use.

For in-stock (inventory) wheel orders, cancellations are subject to a 25% restocking fee.

By completing your purchase, you acknowledge and agree to these terms, including waiving the right to file a chargeback.

Thank you for understanding our policy—we’re here to assist with any questions!


Why? Forged wheels are custom-built for your vehicle with custom specs, colors and design, so we can’t resell them. This policy helps us keep prices fair while ensuring quality craftsmanship.

How can I use Affirm to finance?
  1. Proceed to Checkout: Add items to your cart and click "Check Out."
  2. Select Payment Method: On the payment page, instead of choosing a credit card, select "Affirm" as your payment option.
  3. Complete Your Purchase: Click "Pay"—a separate Affirm window will open.
  4. Log In & Confirm: Sign in to your Affirm account (or sign up if new) and choose a payment plan.
  5. Finalize Payment: Confirm your loan terms, and Affirm will process the payment.

Once approved, you’ll be redirected back to the store with your order confirmed!

Note: Approval depends on eligibility. Payment options may vary.

Why Choose Gem Motorsports?

We’re a family-owned business in the heart of Los Angeles, built on three simple promises: honest customer service, unbeatable deals, and top-tier quality.

Every member of our tight-knit team treats this business like our own—because it is. And it shows. Check out our 5-star ratings across eBay, forums, and review sites. In the aftermarket world, that kind of trust is rare—but for us, it’s just the standard.

Why? Because your satisfaction isn’t just our goal—it’s the only way we know how to do business.

Didn’t find your answer?

Don't hestitate to contact us

Gem Motorsports
Carbon Fiber Rear Diffuser — 2024+ S650 Mustang GT / Dark Horse
Questions? Call us: 818-210-8770

Give your 2024+ S650 Mustang GT or Dark Horse an aggressive, race-inspired look with this real carbon fiber rear diffuser. Lightweight, rigid, and finished with a protective clear coat, this diffuser is designed for direct fitment on the S650 platform. Professional installation is recommended — drilling of the rear bumper may be required along with minor tweaks to achieve a perfect fit.

Type Rear Diffuser
Material Real Carbon Fiber
Finish Clear Coat Protected
Installation Drilling Required
Compatibility 2024+ Ford Mustang GT & Dark Horse (S650)
Availability In Stock — Ready to Ship
  • Real Carbon Fiber Construction — Lightweight & Rigid
  • Direct Fitment for the 2024+ S650 Mustang Platform
  • Clear Coat Protected Finish for Long-Term Durability
  • Aggressive, Race-Inspired Appearance
  • Professional Installation Recommended
  • Drilling of Rear Bumper Required
Compatible Vehicles 2024+ Ford Mustang GT & Dark Horse (S650)

This diffuser is designed for direct fitment on the S650 platform. Professional installation is strongly recommended. Drilling of the rear bumper may be required, and extra tweaks may be needed to achieve a perfect fit. Please see our Disclaimer tab for details on aftermarket fitment expectations.

Availability In Stock — Ready to Ship

Orders typically process and ship within 1 business day. Tracking information will be provided via email once your order is on its way.

Important Notice

  • Professional installation is strongly recommended for this product.
  • Drilling of the rear bumper may be required for installation.
  • Minor fitting adjustments may be needed depending on vehicle tolerances.

We recommend working with an experienced installer familiar with aftermarket carbon fiber aero components.

Disclaimer

Aftermarket Fitment

This rear carbon fiber diffuser is an aftermarket performance and cosmetic product designed for the Ford Mustang. Due to the nature of aftermarket carbon fiber manufacturing and vehicle variances, fitment may not be identical to OEM factory components. Minor gaps, spacing differences, or alignment variances of a few millimeters may be present.

These small imperfections are common with aftermarket aerodynamic parts and are generally not noticeable once installed, while still providing an aggressive and premium appearance. This disclaimer is intended for customers with extremely high OEM-level fitment expectations. By purchasing this product, the buyer acknowledges and accepts these possible fitment characteristics associated with aftermarket parts.

Feedback & Legal

We are a small, family-owned business. If any customer or competitor attempts to misuse feedback systems — such as threatening negative feedback to obtain a refund, or leaving false or malicious reviews — we will pursue legal action to the fullest extent permitted by law. We work hard to build our reputation and believe in fairness and accountability for all parties.