Frequently Asked Questions

In-stock orders placed before 3 PM EST ship the same business day. Everything else ships within 24 hours. Oversized and freight items take longer to prepare, and direct-ship items leave the manufacturer's warehouse on their own schedule. Processing times are targets, not guarantees — see our Shipping Policy for full details.

Standard, expedited, and overnight options are available at checkout. The rate you see at checkout is the rate you pay — we never add shipping surcharges after an order is placed.

Free shipping is an economy service with no guaranteed delivery date. It is the most affordable option, not the fastest. If you have installation time booked, choose a paid expedited service instead.

We ship from multiple warehouses, so a single order may arrive in several shipments on different days. You are never charged extra for split shipments, and each package gets its own tracking.

Yes. You will receive a tracking link by email as soon as your order ships. If an order ships in multiple packages, you will receive tracking for each one.

Orders of $550 or more may ship with signature confirmation required. This protects both you and us against porch theft on higher-value shipments.

Large items such as body panels, wheels, and exhaust systems ship by freight. The carrier will call to schedule a delivery appointment, so please provide a phone number you actually answer — missed appointments and delayed scheduling can result in carrier storage fees.

Delivery is curbside. Inspect the shipment before you sign. If you see damage, note it on the delivery receipt before signing. Signing a clean receipt makes damage claims very difficult to win.

Some items can, but freight, oversized, and hazmat items cannot. Our Shipping Policy lists which destinations are supported for each shipping method.

Contact us immediately. If the order has not shipped, we can usually update it. Once a package is in transit, address corrections may not be possible, and any carrier intercept or reshipment fees are the customer's responsibility.

The item is not currently in stock. We will contact you with an estimated restock date and give you the choice to wait, swap for an alternative, or cancel for a full refund. Nothing ships until you decide.

Check your spam and promotions folders first — confirmations are sent immediately after checkout. If it is not there, the email address on the order may contain a typo. Contact us with your name and order total and we will locate the order and correct it.

Text 929-352-6561 with the SKU, or submit a Backorder Inquiry through our contact page. Include the SKU from the product page so we can check the exact item.

Contact us as soon as possible. Before an order is processed for shipping we can usually cancel or modify it. Once payment has been captured, cancellations may be subject to a 6% fee, and once an order has shipped it must be handled as a return.

A special order is an item brought in specifically for you — custom-configured, made-to-order, or not normally stocked. Special orders are final sale and cannot be returned or cancelled once placed. Items are clearly identified before purchase.

We accept all major credit cards, PayPal, and other secure checkout options. All transactions are encrypted, and we never see or store your full card details.

Yes. Sales tax is calculated automatically at checkout based on your shipping address and applicable state law. Tax is refunded in full on any returned merchandise.

Yes. If you are a shop, installer, or reseller, email support@onefastshop.com to apply for a dealer account. Include your business name and any applicable resale certificate.

Yes, against other authorized dealers. Email support@onefastshop.com with a link to the competing listing and the SKU you want matched.

A few conditions: the match must be for the identical item — same brand and same part number, not a comparable part from another brand — and the seller must be an authorized dealer for that brand. We do not match marketplace or auction listings such as eBay and Amazon third-party sellers, or unauthorized and gray-market sources.

Some remanufactured parts include a refundable core charge. Once you return the old part in acceptable condition, the core charge is refunded. Core return requirements are listed on the product page.

Each product page lists fitment details. If you are unsure, contact us with the SKU and your vehicle's year, make, and model before you order — we would much rather confirm fitment up front than process a return.

Yes. Every part we sell is brand new, factory-packaged, and sourced through authorized distribution — never used, refurbished, or gray market. All products carry their full manufacturer warranty.

Not automatically. Under the Magnuson-Moss Warranty Act, a dealer cannot void your entire factory warranty simply because you installed an aftermarket part — they must show the part actually caused the failure being claimed. That said, dealers vary in how they apply this, and a related failure can legitimately be denied. If warranty coverage is a concern, check with your dealer before installing.

It depends on the part. Some products carry a CARB Executive Order (EO) number and are street-legal in all 50 states; others are labeled for off-road, race, or competition use only and are not legal for use on public roads in California or other states that follow CARB standards.

Where a part has an EO number or a competition-use restriction, it is noted on the product page and by the manufacturer. Confirming that a part is legal for your vehicle and where you drive it is the buyer's responsibility — if you are unsure, contact us with the SKU before ordering. Competition-use products are final sale.

Verifying fitment is the customer's responsibility, so a wrong-part order is handled as a standard return: the item must be new and uninstalled in its original packaging, an 8% restocking fee applies, and return shipping is your responsibility. Request an RMA within 30 days of delivery.

No. Installing a part signals acceptance, and installed or used parts cannot be returned or resold as new. This includes parts that were test-fitted, torqued, heat-cycled, or exposed to fuel or fluids. Always confirm fitment before installation.

Yes. If you need a different part number or size, request an exchange rather than a return — the restocking fee is waived on exchanges. The item must still be new, uninstalled, and in original packaging.

Instructions are supplied by the manufacturer and are usually included in the box or available on the manufacturer's website. We are happy to answer questions about fitment, part numbers, and what is included, but we are not an installation service and cannot walk you through the job. For anything involving fuel, brakes, or suspension, we strongly recommend a qualified installer.

You have 30 days from delivery to request a return. Items must be new, uninstalled, and in original packaging with all hardware and documentation. Full terms are in our Refund Policy.

Yes. Every return requires authorization first — do not ship anything back before you have an RMA. Unauthorized returns may be refused or delayed. Submit a Return or Exchange request through our contact page with your order number.

Standard returns carry an 8% restocking fee, calculated on the pre-tax merchandise price. Tax is refunded in full. The fee is waived on exchanges, defective items, and any error on our end.

For standard, change-of-mind, and fitment returns, return shipping is the customer's responsibility. If the item arrived defective or damaged, or we made a mistake, we cover it with a prepaid label. Original outbound shipping is non-refundable.

Installed or used parts, special orders and custom-configured items, hazardous materials, competition-use products, and items outside the 30-day window. Category-specific rules are listed in our Refund Policy.

Once your return arrives and passes inspection, the refund is issued to your original payment method. Depending on your bank or card issuer, it can take a few additional business days to appear on your statement.

If a discount or promotion was applied to your order, returning part of it may change what you originally qualified for. Percentage discounts are refunded proportionally, and if a return drops your order below a promotional threshold — such as a free shipping or spend-and-save minimum — the value of that promotion is deducted from your refund. Your refund breakdown will show this clearly.

Email support@onefastshop.com with clear photos of the item, the box inside and out, and the shipping label. Do not discard the packaging — carriers require it to process a claim. Report transit damage promptly so we can file within the carrier's claim window.

Report defects within 7 days of delivery. We will cover return shipping with a prepaid label and send a replacement or issue a refund. Do not install a part you suspect is defective — installation limits your options.

OneFastShop products carry a 12-month warranty against manufacturing defects. Vendor and manufacturer-branded products are covered by us for the first 30 days, after which claims are handled through the manufacturer's warranty program — we will help you start that process.

Tuning alone does not void your warranty. Exclusions such as abuse, improper installation, and competition use are listed in our Refund Policy.

Check with neighbors and your building first, then contact us within 15 days of the delivery scan so we can open a carrier investigation. Once a package shows a delivered scan, responsibility transfers to the customer, but we will do everything we can to help resolve it.

First check whether your order shipped in multiple packages — the rest may still be in transit. If a box arrived short, contact us with your order number and photos of the packing slip and box contents.

Yes, we ship worldwide. Rates and transit times are calculated at checkout based on destination. Some items cannot ship internationally due to size or hazardous material restrictions.

No. Prices at checkout do not include VAT, customs duties, or import fees. These are assessed by your country at the time of import and are the buyer's responsibility. Refused shipments that return to us are treated as standard returns, and duties are not refundable.

Hazardous materials — aerosols, batteries, airbags, some fluids — ship ground only within the contiguous United States. They cannot ship internationally, by air, or to Alaska, Hawaii, or APO/FPO addresses, and they are final sale.

Yes, under the same 30-day terms, but return shipping, duties, and any customs charges on the return are the customer's responsibility. EU customers have additional withdrawal rights described in our Refund Policy.