Borla 140991BC Cat-Back Exhaust System Kit Touring Sound Level

The Borla 140991BC Cat-Back Exhaust System Kit delivers enhanced performance and the signature Borla Sound of Power for select GM Silverado and Sierra trucks with factory split rear exit configurations. This system is designed for vehicles EXCEPT ZR2 and AT4X models, and requires factory split rear exit setup.

Key Features:

• 3.5-inch inlet transitioning to dual 2.75-inch outlets for optimized exhaust flow
• Touring sound level provides mellow tone with zero drone inside the cabin
• Dual 3.5-inch round black chrome tips on premium T-304 stainless steel
• Includes valve simulator to prevent Check Engine Light activation
• Patented straight-through and multi-core technology unleashes hidden horsepower
• Ultra-smooth mandrel bends maximize exhaust velocity and power
• Precision CNC manufacturing ensures accurate, bolt-on fitment
• Constructed from superior T-304 stainless steel for maximum durability

Installation Notes:

• Installation requires removal of factory valance tips
• Crew Cab models with Standard Bed (6'7", 157" wheelbase) require adapter 60706 (sold separately)
• Clean black chrome tips with hot water and microfiber cloth only—do not use Borla Stainless Steel Polish 21461

Borla Cat-Back systems improve exhaust velocity to add power, driving excitement, and fuel economy while delivering the distinctive Borla sound respected by automotive enthusiasts worldwide. Backed by Borla's Million-Mile Warranty, this system represents the ultimate in performance exhaust engineering from the world's most experienced exhaust brand.