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2026 GMC Sierra 1500 AT4X Exhaust Systems
2026 GMC Sierra 1500 AT4X Exhaust Systems(3) 
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Cat-Back Exhaust System
Part# 141004 What vehicle does this fit?
Sound Level:
Engines:6.2L Body:Crew Cab
Pipe Diameter:3.5" Into Dual 2.75" Tail Pipes Exit:Truck Single Split Rear Exit
Has Valves FALSE
- Fits ZR2 & AT4X models
- BORLA® system has a valve simulator to prevent the Check Engine Light from coming on
- System features Polyphonic Harmonizer technology
- Muffler 60679 can be added to this system to attain the S-Type sound level
- Features turn down tail pipes
Price: $1,597.99
Cat-Back Exhaust System
Part# 141003 What vehicle does this fit?
Sound Level:
Engines:6.2L Body:Crew Cab
Pipe Diameter:3.5" Into Dual 2.75" Tail Pipes Exit:Truck Single Split Rear Exit
Has Valves FALSE
- Fits ZR2 & AT4X models
- BORLA® system has a valve simulator to prevent the Check Engine Light from coming on
- Polyphonic Harmonizer 60680 can be added to this system to attain the ATAK® sound level
- Features turn down tail pipes
Price: $1,649.99
Cat-Back Exhaust System
Part# 141002 What vehicle does this fit?
Sound Level:
Engines:6.2L Body:Crew Cab
Pipe Diameter:3.5" Into Dual 2.75" Tail Pipes Exit:Truck Single Split Rear Exit
Has Valves FALSE
- Fits ZR2 & AT4X models
- BORLA® system has a valve simulator to prevent the Check Engine Light from coming on
- Features turn down tail pipes
Price: $1,559.99
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