Borla 140996 ATAK Cat-Back Exhaust System Kit for GM Silverado/Sierra

The Borla 140996 ATAK Cat-Back Exhaust System delivers aggressive sound and performance gains for Chevrolet Silverado and GMC Sierra trucks with factory split rear exit configurations. This system is designed for EXCEPT ZR2 and AT4X models, and requires adapter 60706 for Crew Cab with Standard Bed (6'7" / 157" wheelbase) vehicles.

Advanced Sound Technology:

• Features Borla's aggressive ATAK muffler for maximum sound intensity
• Polyphonic Harmonizer Technology uses pipes of different diameters and lengths to create harmonized exhaust notes
• Delivers a clean, rich, full-bodied sound with no interior drone
• Can be converted to S-Type sound level (quieter) by replacing Polyphonic Harmonizer with muffler 60679
• Includes valve simulator to prevent Check Engine Light activation

Performance Features:

• 3.5-inch diameter inlet transitioning to dual 2.75-inch outlets
• Patented straight-through and multi-core technology unleashes hidden horsepower
• Increased exhaust velocity improves power, fuel economy, and throttle response
• Ultra-smooth mandrel bends maximize flow and power delivery

Premium Construction:

• Constructed from premium T-304 austenitic stainless steel for superior durability
• Precision CNC manufacturing ensures accurate, direct-fit installation
• Designed to reuse factory exhaust tips (tips not included)
• Backed by Borla's Million-Mile Warranty

This cat-back system provides the legendary Borla Sound of Power while improving performance and maintaining emissions compliance. Professional installation recommended for best results.