Borla 1984-1991 Chevrolet C4 Corvette 5.7L V8 D SQ AC IC Rear Section 2.5 inch Converter
To complete this installation you will need to MODIFY the Original Equipment (O.E.) Mid-Pipe by expanding the outlets from to 2.25" to 2.5". This system upgrades your '84-'91 Corvette from the stock 2.25" diameter Axle-Back system to a more aggressive 2.5". The system features the classic S-Type sound with no drone inside the vehicle. It has dual BORLA® intercooled style 3.38" x 3" rectangle polished T-304 stainless steel tips on each muffler for a custom appearance. BORLA® Cat-Back™ & Axle-Back exhaust systems feature patented straight-through and multi-core technology to unleash hidden horsepower. Increased exhaust velocity adds power, driving excitement, fuel economy, and the distinctive BORLA® Sound of Power respected by motoring enthusiasts everywhere. Each system is built from premium, high-quality T-304 austenitic stainless steel, superior to T-400 series knockoffs (such as 409), to give you the absolute best in performance and durability. Ultra-smooth mandrel bends ensure maximum flow & power, and precision computer numerical control (CNC) manufacturing ensures an accurate fit. Best of all, BORLA® stands behind every system with a Million-Mile Warranty. Just what you'd expect from the world's most experienced (and most winning) exhaust brand.
Installation InstructionsThis Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1988 | Chevrolet | Corvette | 35th Anniversary Edition |
| 1984-1991 | Chevrolet | Corvette | Base |
| 1986 | Chevrolet | Corvette | Indianapolis 500 Pace Car |
| 1990-1991 | Chevrolet | Corvette | ZR-1 |
Customer Care
Frequently Asked Questions
Q: Is my personal information kept private? Is it safe to use my credit card?
A: Yes, your personal information is kept private and it is safe to use your credit card.
Q: How much will shipping cost?
A: Unfortunately, the cost of shipping is a real expense. Our goal is to minimize your shipping costs. Shipping is calculated at checkout based on the items in your cart and will be displayed prior to you placing an order. Please note that oversized items may be subject to additional charges, which will be noted on the product page.
Q: How do I track my order?
A: Once your order ships, you will receive a tracking notification via email. You are not required to purchase, download or use the Route app to track your order - this is an optional feature of the Route Package Protection service.
Q: Can someone outside of the United States place an order?
A: Yes, we are happy to provide worldwide service for our customers. Your shipping charges will be calculated during the checkout process. Customs and duty fees are the responsibility of the buyer.
Blog posts
-
Upgrade your Corvette's interior and exterior with real carbon fiber. This buyer's guide covers every carbon fiber accessory available at Corvette Store Online — from American Car Craft's color-matched trim kits to Carbonaddons' precision interior overlays — sorted by generation and vendor.Read more
-
Upgrade your Corvette's cabin with Redline Goods handcrafted leather reupholstery kits — shift boots, steering wheels, armrests, and more — available for C1 through C7 in 50 colors and 5 premium materials.Read more
-
Read more
Frank Harris bought his first Corvette at 17. He's now 80. That's 14 Corvettes across 66 years — from a 1959 283 with two four-barrels all the way to a 2025 Red Mist Metallic C8 Stingray with Natural interior and a full-length carbon fiber racing stripe. A Corvette lover forever, and the photos prove it. Click to read the full story.