The ATAK Cat-Back Exhaust System puts Borla's most aggressive sound level on the exhaust path behind the catalytic converters. Mandrel-bent T-304 stainless tubing keeps its round profile through every bend. It is Borla part 140997, built for the 2024-2026 Chevrolet Silverado 1500 and GMC Sierra 1500.
Installation is not included, and any extension pipe, tip or other optional Borla part called out in the fit notes is sold separately.
Features
Loudest Borla sound level
ATAK delivers the highest volume in the Borla lineup, above S-Type and Touring, with a full-bodied and aggressive character.
ATAK multi-core muffler technology
ATAK stands for Acoustically-Tuned Applied Kinetics. ATAK mufflers hold several solid and perforated cores, and Borla uses computer modeling to adjust their shapes and perforation patterns until the note is right for the vehicle.
Smooth mandrel-bent tubing throughout
Every bend is mandrel formed, so the tube keeps a full round cross-section instead of crimping, which keeps exhaust flow smooth from front to back.
T-304 stainless steel construction
The system is built from T-304 austenitic stainless steel, which holds up to heat and corrosion better than 409 or aluminized steel.
CNC-built for accurate fitment
Borla uses computer numerical control manufacturing so each piece lines up with the vehicle it was designed for.
Covered by the Million-Mile Warranty
Materials and workmanship are covered for the original buyer on the original vehicle; tip finishes, coatings, carbon fiber and moving parts carry one year.
Fitment & Compatibility
Fit guidance: Fits: 2024-2026 Chevrolet Silverado 1500 & GMC Sierra 1500, with the engine, cab, bed and trim qualifiers shown. Check your vehicle against these notes before ordering.
Borla fit notes for this part
| Does not fit ZR2 or AT4X. |
| Factory split rear exit trucks only. |
| Includes a valve simulator. |
| Crew Cab 6'7" bed (157" WB) requires adapter 60706. |
Specifications
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Brand: Borla
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Sound level: ATAK
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Warranty: Borla Million-Mile Warranty (one year on carbon fiber, black coatings, tip finishes and moving parts)
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Material: T-304 stainless steel
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System Type: Cat-Back
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Tube Bends: Mandrel-bent
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Pipe Diameter: 3.5" into dual 2.75" tail pipes
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Tip Exit: Truck Dual Split Rear Exit
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Part numbers: 140997BC, 140997CFBA
Tip finish options
| Tip finish |
Borla part number |
| Black Chrome |
140997BC |
| Carbon Fiber, Black Anodized |
140997CFBA |
California Proposition 65
WARNING: This product in the physical form it is sold does not present a hazard. However, operations including, but not limited to welding, brazing or thermal cutting can expose you to chemicals including chromium, nickel, cobalt, arsenic, cadmium and lead, which are known to the State of California to cause cancer, birth defects and other reproductive harm. For more information go to www.P65Warnings.ca.gov.
Installation
Type: Cat-Back exhaust system · Install: vehicle-specific; method varies by application · Tools: listed on the Borla install sheet
This system replaces the factory exhaust from the catalytic converters back and hangs from the vehicle's existing mounts. The fit notes below and the Borla install sheet cover the steps for this application.
Borla's installation instructions for this part number are linked under Resources. Read them fully before starting.
Resources
Warranty, Shipping & Returns
Warranty. Borla covers its products under the Million-Mile Warranty, which protects the original purchaser of record, on the vehicle the part was first installed on, against defects in materials or workmanship for a million miles. Carbon fiber, black coatings, tip finishes and moving parts such as valves and actuators carry a one-year term, and appearance blemishes from weather, road hazards, lack of maintenance or temperature extremes are not covered. When Borla's inspection confirms a defect, Borla repairs or replaces the part at its option. The warranty does not pay for removal or reinstallation, does not apply to parts damaged by accident, abuse, misuse, misapplication or modification, and does not cover sound level, because sound is a matter of taste. Shipping. The carrier and ship method are set by the size and weight of the carton when the order is placed; long exhaust systems ship in oversize cartons. Inspect on delivery. When the carton arrives, open it and check every pipe, muffler, clamp and hanger against the parts list before you start the install, and report any shipping damage right away with photos.
Returns. Unused items in their original packaging can be returned within 30 days of delivery. If an item arrives damaged, defective or wrong, return shipping is on us. See our Returns & Refunds Policy, or email support@prestigetruck.com with any question.
About Borla
Borla began in 1978 building stainless exhaust systems for concours Rolls-Royce and Ferrari restorations, and the company has grown into a leading name in stainless performance exhaust for cars and trucks.
Each Borla system starts as a clean-sheet design for one vehicle. Engineers at the research and development center in Oxnard, California shape the muffler bodies, internal cores and flow paths around that platform's own mechanical and acoustic traits, then offer the result in a choice of Touring, S-Type or ATAK sound.
Production happens at a 100-acre plant in Johnson City, Tennessee, where raw stainless steel is cut, bent, welded and shipped. Borla also supplies factory-installed accessory exhaust to automakers such as GM, Ford and Toyota.
