Borla Performance 3.5-Inch Exhaust Extension Pipe - 2020-2026 Silverado/Sierra 2500 & 3500 6.6L V8 (60713)
Seamlessly span the wheelbase gap on your heavy-duty long-bed truck with the Borla Performance 3.5-Inch Exhaust Extension Pipe for 2020-2026 Chevrolet Silverado and GMC Sierra 2500/3500 models equipped with the 6.6L V8 gasoline engine. This premium underbody adapter pipe is specifically engineered to bridge the distance required when modifying an exhaust footprint. It allows owners of extended-frame trucks to adapt standard 158.9-inch wheelbase Borla cat-back performance exhaust systems to flawlessly fit longer Crew Cab models configured with an 8-foot 2-inch long bed on a 172-inch wheelbase chassis.
Built to handle severe heavy-duty hauling workloads, maximum payload vibrations, and extreme thermal cycles, this durable extension adapter is manufactured entirely from premium T-304 austenitic stainless steel to deliver ultimate life-long protection against structural rust and oxidation. Advanced computer numerical control (CNC) manufacturing processes ensure precise tube alignment and a perfect under-chassis fitment that clears all vital suspension lines. Measuring 17.5 inches in total length, the component is engineered with a 3.5-inch inside diameter (I.D.) inlet and a 3.5-inch outside diameter (O.D.) outlet. It comes complete with one heavy-duty 3.5-inch installation band clamp for a secure bolt-on slip connection. This adapter pipe is proudly backed by Borla's iconic lifetime Million-Mile Warranty.
Features
- Adapters allow standard 158.9" wheelbase Borla systems to fit 172" long-bed wheelbases
- Manufactured from premium T-304 austenitic stainless steel for life-long corrosion defense
- High-flow 3.5" internal diameter maintains unrestrictive exhaust gas velocity and power
- Precision CNC manufactured to guarantee flawless clearance and accurate chassis alignment
- Features a slip-fit 3.5" I.D. inlet and 3.5" O.D. outlet layout spanning a 17.5" overall length
- Includes one heavy-duty 3.5" premium exhaust band clamp to complete the installation
- Backed by Borla's legendary lifetime Million-Mile Warranty, ensuring ultimate quality assurance
Fitment
- 2026 Chevrolet Silverado 2500 / 3500 6.6L V8 Gas (Crew Cab / Long Bed 8' 2" / 172" WB)
- 2025 Chevrolet Silverado 2500 / 3500 6.6L V8 Gas (Crew Cab / Long Bed 8' 2" / 172" WB)
- 2024 Chevrolet Silverado 2500 / 3500 6.6L V8 Gas (Crew Cab / Long Bed 8' 2" / 172" WB)
- 2023 Chevrolet Silverado 2500 / 3500 6.6L V8 Gas (Crew Cab / Long Bed 8' 2" / 172" WB)
- 2022 Chevrolet Silverado 2500 / 3500 6.6L V8 Gas (Crew Cab / Long Bed 8' 2" / 172" WB)
- 2021 Chevrolet Silverado 2500 / 3500 6.6L V8 Gas (Crew Cab / Long Bed 8' 2" / 172" WB)
- 2020 Chevrolet Silverado 2500 / 3500 6.6L V8 Gas (Crew Cab / Long Bed 8' 2" / 172" WB)
- 2026 GMC Sierra 2500 / 3500 6.6L V8 Gas (Crew Cab / Long Bed 8' 2" / 172" WB)
- 2025 GMC Sierra 2500 / 3500 6.6L V8 Gas (Crew Cab / Long Bed 8' 2" / 172" WB)
- 2024 GMC Sierra 2500 / 3500 6.6L V8 Gas (Crew Cab / Long Bed 8' 2" / 172" WB)
- 2023 GMC Sierra 2500 / 3500 6.6L V8 Gas (Crew Cab / Long Bed 8' 2" / 172" WB)
- 2022 GMC Sierra 2500 / 3500 6.6L V8 Gas (Crew Cab / Long Bed 8' 2" / 172" WB)
- 2021 GMC Sierra 2500 / 3500 6.6L V8 Gas (Crew Cab / Long Bed 8' 2" / 172" WB)
- 2020 GMC Sierra 2500 / 3500 6.6L V8 Gas (Crew Cab / Long Bed 8' 2" / 172" WB)
- Fits Automatic Transmission Models Only (2WD / 4WD; 4-Door Crew Cab Long Bed Models)
*Note: Designed for 6.6L Gas engines ONLY; does NOT fit Duramax Diesel models. Does NOT fit vehicles equipped with Dual Rear Wheels (Dually). Used strictly to adapt Borla 158.9" wheelbase cat-back exhaust configurations.
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov
