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" diameter 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®). Tips NOT Included, reuse factory tips. Systems that include tips are also available. BORLA® Cat-Back™ & Axle-Back exhaust systems feature patented straight-through and multi-core technology 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 austenitic 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 or 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:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2024-2026 | Chevrolet | Silverado 1500 | High Country |
| 2024-2026 | Chevrolet | Silverado 1500 | LT Trail Boss |
| 2024-2026 | Chevrolet | Silverado 1500 | LTZ |
| 2024-2026 | Chevrolet | Silverado 1500 | RST |
| 2024-2026 | GMC | Sierra 1500 | AT4 |
| 2024-2026 | GMC | Sierra 1500 | Denali |
| 2024-2026 | GMC | Sierra 1500 | Denali Ultimate |
| 2024-2026 | GMC | Sierra 1500 | SLT |
- 2024-chevrolet-silverado-1500-high-country-esi6622674
- 2024-chevrolet-silverado-1500-lt-trail-boss-esi1914563
- 2024-chevrolet-silverado-1500-ltz-esi7660278
- 2024-chevrolet-silverado-1500-rst-esi2621154
- 2024-gmc-sierra-1500-at4-esi5926512
- 2024-gmc-sierra-1500-denali-esi7182099
- 2024-gmc-sierra-1500-denali-ultimate-esi1996406
- 2024-gmc-sierra-1500-slt-esi6961990
- 2025-chevrolet-silverado-1500-high-country-esi3694306
- 2025-chevrolet-silverado-1500-lt-trail-boss-esi7883447
- 2025-chevrolet-silverado-1500-ltz-esi5603540
- 2025-chevrolet-silverado-1500-rst-esi8740334
- 2025-gmc-sierra-1500-at4-esi3072543
- 2025-gmc-sierra-1500-denali-esi4182840
- 2025-gmc-sierra-1500-denali-ultimate-esi4474460
- 2025-gmc-sierra-1500-slt-esi3975696
- 2026-chevrolet-silverado-1500-high-country-esi3187544
- 2026-chevrolet-silverado-1500-lt-trail-boss-esi7063761
- 2026-chevrolet-silverado-1500-ltz-esi2011883
- 2026-chevrolet-silverado-1500-rst-esi1340974
- 2026-gmc-sierra-1500-at4-esi4013423
- 2026-gmc-sierra-1500-denali-esi7734082
- 2026-gmc-sierra-1500-denali-ultimate-esi8564221
- 2026-gmc-sierra-1500-slt-esi8551658
- ClearanceItem:N
- EPA:N/A
- Exhaust- Mufflers & Tips>Catback
- fits_2025`GMC`Sierra 1500`AT4
- LTL:N
- MPN:140990
- Non-CARB:N
- Prop65:Y
- SpecialOrder:Y