Borla 2018 Ford Mustang GT 5.0L AT/MT 2.5in S-Type Exhaust w/ Valves (Rear Section Only)

The Borla S-Type Axle-Back is a rear-section-only exhaust for a 2018-2023 Ford Mustang: GT, Bullitt (2019-2020), Mach 1 (2021-2023), replacing everything from the axle back only, the rear-most section.

Why Upgrade

Per Borla, this system offers:

• Borla's patented straight-through, multi-core technology, which Borla says unlocks hidden horsepower and increases exhaust velocity
• T-304 stainless steel construction throughout
• steel Borla says outlasts the cheaper T-400-series (like 409) steel some competitors use
• bright chrome stainless tips
• mandrel-bent tubing and CNC-controlled manufacturing for consistent flow and a precise fit
• Borla's electronically-controlled valves, letting you switch the exhaust note between quieter and louder modes rather than one fixed tune
• a Borla Million-Mile warranty on the system

Fitment Notes

Fits 2018-2023 Ford Mustang: GT, Bullitt (2019-2020), Mach 1 (2021-2023). Does not fit Mustang: EcoBoost, GT500, GT350. Per Borla's own listing: "This system will fit Bullitt models. It fits both the coupe and convertible models." This specific system is built for Mustangs equipped with Ford’s factory Active Valve Performance Exhaust option.

More Axle-Back parts that fit your Mustang

Install and Honest Talk

This is the rear section only, bolting on behind your factory or existing mid-pipe; it does not touch the catalytic converters either way, so it changes sound and, per Borla, exhaust flow, not emissions equipment. Expect a louder exhaust note than stock, with some drone at certain highway RPMs possible, which is common for aftermarket exhausts. Borla does not list a dyno figure for this specific system. What else you need: [VERIFY: whether new gaskets, clamps, or hangers are included, and whether it bolts directly to your specific mid-pipe or needs trimming].

Specs

• Brand: Borla
• Type: S-Type Axle-Back
• Material: T-304 stainless steel
• Valves: Electronically controlled valves included
• Fits: 2018-2023 Ford Mustang: GT, Bullitt (2019-2020), Mach 1 (2021-2023)
• Excludes: Mustang: EcoBoost, GT500, GT350
• Part number: 11951

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Free US shipping over $99

Orders over $99 ship free by ground to the lower 48 states. Alaska, Hawaii and Canada are not included; shipping to those addresses is calculated at checkout. Some oversize or heavy parts (long-tube exhausts, bumpers, full lift kits) go freight instead of parcel: free to a commercial address with a loading dock, and residential freight delivery carries an additional charge.

When it ships

Parts ship direct from the distributor warehouse that stocks them, so dispatch timing depends on the part, not on a single cutoff. You get a confirmation with tracking as soon as it leaves, and tracking shows the delivery estimate for your address. If a part is backordered we email you an expected availability date.

Missing or damaged items

Report a short shipment or shipping damage within 5 business days of delivery. For a packing error, send us the date or package code printed on the label along with the part number so we can trace it with the warehouse.

We have a 30-day return policy, which means you have 30 days after receiving your item to request a return.

To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.

To start a return, you can contact us at help@anythingcoyote.com or fill our our contact form. If your return is accepted, we’ll send you a return shipping label, as well as instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted. 

You can always contact us for any return question at help@anythingcoyote.com.

Damages and issues
Please inspect your order upon reception and contact us immediately if the item is defective, damaged or if you receive the wrong item, so that we can evaluate the issue and make it right.

Exceptions / non-returnable items
Certain types of items cannot be returned, like perishable goods (such as food, flowers, or plants), custom products (such as special orders or personalized items), and personal care goods (such as beauty products). We also do not accept returns for hazardous materials, flammable liquids, or gases. Please get in touch if you have questions or concerns about your specific item.

Unfortunately, we cannot accept returns on sale items or gift cards.

Exchanges
The fastest way to ensure you get what you want is to return the item you have, and once the return is accepted, make a separate purchase for the new item.

Refunds
We will notify you once we’ve received and inspected your return, and let you know if the refund was approved or not. If approved, you’ll be automatically refunded on your original payment method. Please remember it can take some time for your bank or credit card company to process and post the refund too.