EXCEPT ZR2 & AT4X models. Factory Split Rear Exit Vehicles ONLY. Add Adapter 60706 for Crew Cab with Standard Bed (6' 7") 157" wheelbase vehicles. This BORLA® system has a valve simulator to prevent the Check Engine Light from coming on. The 3.5" into dual 2.75" system features BORLA®'s aggressive ATAK® muffler and Polyphonic Harmonizer Technology which utilizes patented units that contain pipes of different diameters and lengths to create multiple exhaust notes that harmonize to deliver a clean, rich, full-bodied sound with no drone inside the vehicle. Replace the Polyphonic Harmonizer behind the muffler in this ATAK® system with muffler 60679 to attain the S-Type sound level (quieter than ATAK®). This system features dual 3.5" round carbon fiber tips with black anodized centers on each tail pipe. Installation REQUIRES removal of the Factory Valance Tips. Systems with bright chrome on T-304 stainless tips, carbon fiber tips, and systems that reuse the original equipment tips are also available. BORLA® Cat-Back™ and Axle-Back exhaust systems feature patented straight-through and multi-core technology designed to unleash hidden horsepower. Increased exhaust velocity adds power, driving excitement, fuel economy, and the distinctive BORLA® Sound of Power respected by motoring enthusiasts everywhere. Each system is built from premium T-304 stainless steel, superior to T-400 series knockoffs (such as 409), to give you the absolute best in performance and durability. Ultra-smooth mandrel bends ensure maximum flow & power, and precision computer numerical control (CNC) manufacturing ensures an accurate fit. Give your Silverado and Sierra the power and sound it deserves, bolt on a BORLA®. Best of all, BORLA® stands behind every system with a Million-Mile Warranty. Just what you'd expect from the world's most experienced (and most winning) exhaust brand.
This Part Fits:
This Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2025 | Chevrolet | Silverado 1500 | High Country |
| 2025 | Chevrolet | Silverado 1500 | LT Trail Boss |
| 2025 | Chevrolet | Silverado 1500 | LTZ |
| 2025 | Chevrolet | Silverado 1500 | RST |
| 2025 | Chevrolet | Silverado 1500 | ZR2 |
| 2025 | GMC | Sierra 1500 | AT4 |
| 2025 | GMC | Sierra 1500 | Denali |
| 2025 | GMC | Sierra 1500 | Denali Ultimate |
| 2025 | GMC | Sierra 1500 | SLT |
- Category:
- Exhaust, Mufflers & Tips>Catback
- Core:
- N
- LTL:
- N
- MPN:
- 140997CFBA
- Proposition 65:
- Y
- Special Order:
- Y
- Clearance Item:
- N
