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Support

Fitment checks, freight questions, warranty claims and dealer pricing — all handled by the same team that builds the parts.

1 Fitment desk

Send your VIN and we'll confirm the exact program for your chassis, trim and any aero already on the car — before you spend a dollar. Weekday answers same day.

◆ Direct lines

Orders	orders@fierroautoparts.com
Fitment	fitment@fierroautoparts.com
Dealers	trade@fierroautoparts.com
Hours	Mon–Fri, 9:00–18:00 Pacific Time
Registered office	FIERRO AUTO PARTS LLC 311 E 157th St Gardena, CA 90248 United States

◆ About FIERRO

FIERRO exists because the aero we were buying for customer cars never fit. Panels arrived warped, gaps needed a quarter inch of filler, and the shop ate the labour. So we bought a scanner, then a five-axis mill, then an autoclave.

Today we build aerodynamic programs across the marques worth modifying — from Lamborghini and Ferrari to Porsche, McLaren, Mercedes-AMG, BMW M and Audi RS. Every program starts on a real donor car in our California shop and doesn't ship until a unit has been test-hung on that same chassis. If a part fights the car, it doesn't leave.

FIERRO AUTO PARTS LLC is registered in California, United States.

Shipping & freight

Free insured worldwide freight on orders over $5,000. Below that, a flat $850 covers crating and door-to-door transit. Full body kits ship LTL freight on a custom pallet and need a dock or lift-gate — we confirm the delivery method with you before dispatch. Smaller dry-carbon parts go express air, typically 3–5 days. Duties and import taxes outside the US are the buyer's responsibility. We declare accurately; we don't undervalue shipments.

Returns & warranty

12-month structural warranty against delamination, resin failure and manufacturing defects. If a panel fails in that window we replace it — freight on us. Unmodified, unpainted parts can be returned within 14 days of delivery for a 20% restocking fee, with return freight covered by the buyer. Once a part has been trimmed, drilled, prepped or painted it is non-returnable, because at that point it's been made yours. Made-to-order programs entering production cannot be cancelled for a full refund; the deposit covers tooling time already committed.

Installation network

These are professional-fit composite parts. Expect 40–60 shop hours for a full conversion including prep, blending and paint; 3–8 hours for a bolt-on panel. We keep a vetted installer list in Los Angeles, Gardena, Scottsdale, Dallas, Houston, Chicago, New York, Toronto, London, Dubai, Riyadh, Singapore, Sydney and Tokyo. Tell us your city and we'll introduce you.

Dealer & body-shop program

Trade pricing starts at three programs per year, with net-30 terms after your second order. Dealers get marketing renders, priority build slots and direct access to the fitment engineers who tooled the part. Email trade@fierroautoparts.com with your shop name, location and the marques you work on.

Payment & financing

Bank wire and ACH are available on every order. Your wiring instructions and order number appear on the confirmation page the moment you order — keep that page, or look it up any time under Track Order. Card payments are being switched on with our new processor. Until that is live, checkout will tell you plainly that card is unavailable rather than taking an order we cannot charge. Card details are handled entirely by the payment provider and never touch our servers. All prices and transactions are in US Dollars (USD).