1984-1991 Corvette C4 Borla S-Type Axle Back Exhaust with ZR-1 Style Tips

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1984-1991 C4 Borla S-Type Axle Back Exhaust with ZR-1 Style Tips

Looking to add an aggressive new sound to your Corvette without any drone? The 1984-1991 C4 Borla S-Type Axle Back Exhaust System is the answer! This system is constructed from 100% aircraft quality T-304 stainless steel with TIG welds and utilizes Borla's patented Straight-Through and Multi-Core technology to unleash hidden horsepower!

This axle back system upgrades your Corvette from the factory 2.25" system to a more aggressive 2.5" system with ultra-smooth mandrel bends for maximum air flow and power. The precision, computer-controlled CNC manufacturing ensures an accurate fitment and the absolute best in performance and durability. This system features angle-cut ZR-1 style intercooled tips that also add a fresh look to your C4's rear end.

Made in the USA!

• Fits 1984-1991 Corvettes
• Fits Automatics & Manuals
• Requires 2.5" Y-Pipe
• Converts Stock 2.25" System to 2.5"
• TIG Welded
• T-304 Stainless Steel Construction
• Straight-Through Muffler Design
• 2.5" Pipe Diameter (63.5mm)
• 3.8" x 3" Tips (96.5mm x 76.2mm)
• Ultra-Smooth Mandrel Bends
• Maximum Flow & Power
• Computer-Controlled CNC Manufacturing for Accurate Fitment
• Multi-Core Technology
• Increases Exhaust Velocity to Add Power & Fuel Economy
• No Drone
• Mounting Hardware Included
• Instructions Included
• Approximate Installation Time: 1 Hour

NOTE: Exhaust systems that have been installed or modified may not be eligible for return. Please contact us prior to installation if you have any questions regarding sound, performance, or fitment. We're here to help!

Also known under these part numbers: (For reference only)

• 11376
• 25-354517-1
• 808422113762
• BOR11376
• EX-966