Borla 140998 Cat-Back Exhaust System Kit with ATAK Muffler

The Borla 140998 Cat-Back Exhaust System delivers aggressive sound and performance gains for select Silverado and Sierra trucks with factory split rear exit configurations. This system is designed for standard models, excluding ZR2 and AT4X variants.

Key Features:

• ATAK Sound Level: Features Borla's most aggressive ATAK muffler for maximum exhaust note intensity
• Polyphonic Harmonizer Technology: Patented technology uses pipes of varying diameters and lengths to create harmonized exhaust notes with no interior drone
• Premium Construction: Built entirely from T-304 austenitic stainless steel with ultra-smooth mandrel bends for maximum flow
• Dual 3.5-inch Chrome Tips: Each tailpipe features bright chrome-finished tips measuring 3.5 inches by 3.28 inches
• 3.5-inch to Dual 2.75-inch Design: Optimized piping configuration increases exhaust velocity for enhanced power and fuel economy
• Check Engine Light Prevention: Includes valve simulator to maintain proper engine management system operation
• Sound Customization Option: Can replace Polyphonic Harmonizer with muffler 60679 to achieve quieter S-Type sound level

Installation Notes:

• Factory split rear exit vehicles only
• Requires removal of factory valance tips
• Crew cab models with standard 6'7" bed (157" wheelbase) require adapter 60706 (sold separately)
• Precision CNC manufacturing ensures accurate bolt-on fitment

Borla's patented straight-through and multi-core technology unleashes hidden horsepower while delivering the distinctive Borla Sound of Power. Backed by Borla's Million-Mile Warranty, this system provides the ultimate combination of performance, durability, and aggressive exhaust tone.