ALT Mach - Rotary Form 20x10 / 20x11 for Ford Mustang GT, Dark Horse
WARRANTY
LIFETIME STRUCTURAL WARRANTY
FITMENT
FITMENT GUARANTEED OR MONEY BACK
Pairs well with
The ALT Mach Rotary Form is a bold upgrade for the S550 and S650 Mustang GT, EcoBoost, and Dark Horse. In-stock and ready to ship, this fitment comes loaded with complimentary lugs, TPMS, and a family package valued at over $300 — everything you need to mount and go. Its deep dual concave profile and Rotary Forged construction deliver a stronger, lighter wheel than traditional cast alternatives, available in three curated finishes: Gloss Black, Gloss Bronze, and Gloss Gunmetal. Blank center caps are included and OEM Ford center caps are also accepted. Recommended tire sizes will be provided after purchase.
| Front Wheels | 20x10 |
| Rear Wheels | 20x11 |
| OEM Tire Sizes | 245/35/19 Front | 305/30/20 Rear |
| Model | ALT Mach — Rotary Form |
| Construction | Rotary Forged |
| Material | Rotary Forged Aluminum |
| Finish | See Finishes tab |
| Center Caps | Included — Accepts OEM Ford Caps |
| OEM Tires | Compatible |
| Profile | Deep Dual Concave |
| Valve Stems | Not Included |
| Quantity | Set of 4 Wheels |
| Build Time | In-Stock — Ready to Ship |
- Designed for the Best of Performance and Style
- Rotary Forged Construction — Stronger Than Cast, Lighter Than Standard
- Deep Dual Concave Profile
- Fender-Flush Fitment — Guaranteed
- Accepts OEM C8 Tires
- Center Caps Included — OEM Ford Caps Also Accepted
- Complimentary Lugs, TPMS and Family Package Included ($300+ Value)
- Recommended Tire Sizes Provided After Purchase
- Clearance for the Majority of Big Brake Kits on the Market
- Lightweight Construction in Every Profile
- Maximum Concavity in Every Profile
- Stock TPMS Compatible and Transferable
- Accepts OEM Corvette Center Caps
- Message Us for a Free Custom Render of Your Vehicle
Contact us to confirm current availability on your preferred finish.
No modifications required. The ALT Mach Rotary Form is engineered specifically for the S550 and S650 Mustang GT, EcoBoost, and Dark Horse with a 5x114.3 bolt pattern. Blank center caps are included and OEM Ford center caps are also accepted. Stock TPMS sensors are fully compatible. Recommended tire sizes provided after purchase.
These wheels are in-stock and ready to ship. Each set is quality inspected before shipment and includes complimentary lugs, TPMS, and family package.
Important Notice
- All timelines are estimates and may vary depending on material availability, production scheduling, and international shipping.
- No rush orders or exceptions can be made for upcoming events, car shows, or deadlines.
- By placing an order, the customer acknowledges and agrees to this production timeline.
We strongly recommend planning your order accordingly to avoid any scheduling conflicts.
Warranty
Structural Warranty
ALT Forged wheels come with a limited lifetime structural warranty, which guarantees that they will be free from defects in materials and workmanship for as long as you own them. Original invoice is required. This warranty covers the structural integrity of the wheels.
Finish Warranty
In addition to the lifetime structural warranty, ALT Forged also offers a one-year finish warranty. This covers any defects in the finish of the wheels, including discoloration, peeling, or fading. If you notice any qualifying defects within the first year of ownership, we will work with you to repair or replace them as needed.
Warranty Claims
To make a warranty claim, contact us using our online form or by phone. Our team will work with you to determine the best course of action, whether that is repairing or replacing your wheels. We pride ourselves on providing fast, efficient service so you can get back on the road as quickly as possible.
Road Hazard Damage
If you damage your wheels due to a road hazard, we will offer you a discount on a replacement wheel and expedite the build time.
Track Use
ALT Forged wheels are not intended for track use. We do not cover damages caused by improper driving. Track wheels demand specific design and engineering.
Cancellation Policy
All wheels are custom built to order. Cancellations requested within 7 days of purchase may be eligible for cancellation, depending on production status. After 7 days, all forged wheel orders are considered final and cannot be canceled under any circumstances. By purchasing this product, you agree to forfeit your deposit in the event of any cancellation request made after the 7-day window.
ALT Mach - Rotary Form 20x10 / 20x11 for Ford Mustang GT, Dark Horse
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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Shipping Information
Inventory Items will ship the same day! Forged order have ETA of 5-6 weeks.
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Customer Support
Give us a call at 818-210-8770 or email info@gemmotorsports.com
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Live sale on orders over $2500 + / Use promo code "SAVE200"
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?
- Proceed to Checkout: Add items to your cart and click "Check Out."
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- Complete Your Purchase: Click "Pay"—a separate Affirm window will open.
- Log In & Confirm: Sign in to your Affirm account (or sign up if new) and choose a payment plan.
- 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.