The Borla ATAK cat-back exhaust system brings the brand's most aggressive sound level to the 1997-2004 Chevrolet Corvette C5 with the 5.7L V8. It uses 2.5-inch tubing into the mufflers with dual 2-inch outlets and finishes with dual 4.25-inch by 2.5-inch oval polished T-304 stainless steel tips on each side. ATAK (Acoustically Tuned Applied Kinetics) delivers maximum volume and an assertive tone built for drivers who want the loudest street-legal Borla note. Borla cat-back systems use patented straight-through, multi-core technology to free hidden horsepower, increasing exhaust velocity for added power, efficiency, and the distinctive Borla Sound of Power. Each system is built from premium T-304 austenitic stainless steel, with ultra-smooth mandrel bends for maximum flow and CNC-manufactured parts for an accurate fit, and is backed by the Borla Million-Mile Warranty. This system mounts behind the factory catalytic converters and is 50-state emissions legal. Borla exhaust is handmade in the USA.
Specifications:
- System type: Cat-back exhaust system
- Sound level: ATAK (aggressive, loudest)
- Material: T-304 austenitic stainless steel
- Construction: fully welded, mandrel-bent, straight-through multi-core mufflers
- Inlet diameter: 2.5 in
- Outlet diameter: 2 in (dual)
- Tips: dual 4.25 in x 2.5 in oval, polished T-304 stainless steel
- Exit style: dual split rear
- Emissions: 50-state emissions legal
- Warranty: Million-Mile Warranty
- Made in the USA
- Part number: 140428
Vehicle Applications:
- 1997 Chevrolet Corvette
- 1998 Chevrolet Corvette
- 1999 Chevrolet Corvette
- 2000 Chevrolet Corvette
- 2001 Chevrolet Corvette
- 2002 Chevrolet Corvette
- 2003 Chevrolet Corvette
- 2004 Chevrolet Corvette
FAQ
What vehicles does the Borla 140428 cat-back fit?
It fits 1997-2004 Chevrolet Corvette C5 models with the 5.7L V8, including Base, Z06, 50th Anniversary Edition, and Indianapolis 500 Pace Car trims.
Is the Borla 140428 cat-back legal in all 50 states?
Yes. It mounts behind the factory catalytic converters and is 50-state emissions legal.
How loud is the ATAK sound level compared to Touring and S-Type?
ATAK is Borla's loudest and most aggressive sound level. Touring is the mildest, S-Type is moderately aggressive, and ATAK sits at the top for maximum volume.
What tips come on this system?
It uses dual 4.25-inch by 2.5-inch oval polished T-304 stainless steel tips, one pair on each side.
Is it made in the USA?
Yes. Borla exhaust systems are handmade in the USA and backed by a Million-Mile Warranty.
