Borla 140638BC Touring Cat-Back Exhaust System for 2014-2021 Toyota Tundra 4.6L/5.7L V8

Muffler contains an internal H-Pipe for increased performance and improved sound. 140638 is a full True Dual, split rear exit, Cat-Back(tm) system with 4" black chrome on T-304 stainless steel tips. Using Borla(r) Stainless Steel Polish p# 21499 is NOT recommended with these black chrome tips. Bright chrome on T-304 stainless steel tips are also available. We suggest cleaning the tips with hot water and a microfiber cloth. Bright chrome on T304 stainless steel tips are also available. Borla(r) Cat-Back(tm) 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(r) 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. Best of all, Borla(r) 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. Touring Cat-Back Exh Sys. 2014-2021 Toyota Tundra 4.6L/ 5.7L V8 Auto. Trans. 2WD/4WD Reg. Cab With Long Bed (8' 2") 145.7" WB/Ext. (Double) Cab With Standard Bed (6' 7") 145.7" WB/Crew (CrewMax) Cab With Short Bed (5' 7") 145.7" WB. 2014-2021 Toyota Tundra 4.6L/ 5.7L V8 Automatic Transmission 2 & 4 Wheel Drive Regular Cab With Long Bed (8' 2") 145.7" Wheelbase/ Extended (Double) Cab With Standard Bed (6' 7") 145.7" Wheelbase/ Crew (CrewMax) Cab with Short Bed (5' 7") 145.7" Wheelbase.

• Muffler contains an internal X-Pipe
• True Dual system

Brief Description: Upgrade your 2014-2021 Toyota Tundra with the Borla 140638BC Touring Cat-Back Exhaust System, engineered for 4.6L and 5.7L V8 models with automatic transmissions and 2WD or 4WD configurations. This full true-dual system is designed for select Regular Cab, Double Cab, and CrewMax Cab trucks with a 145.7-inch wheelbase. Its Touring sound level provides a refined exhaust note while Borla's patented straight-through and multi-core technology helps improve exhaust flow, throttle response, and overall driving performance.

The Borla 140638BC features an internal H-pipe for enhanced performance and balanced sound, along with smooth mandrel-bent tubing that supports efficient exhaust velocity. Precision CNC manufacturing helps provide consistent fitment, while premium T-304 stainless steel construction offers superior corrosion resistance and long-term durability compared with lower-grade exhaust materials. Borla backs the system with its Million-Mile Warranty for added confidence.

The system exits through polished black chrome tips constructed from T-304 stainless steel. Do not use Borla Stainless Steel Polish part number 21499 on the black chrome finish. For routine care, clean the tips with hot water and a microfiber cloth. Bright chrome tip options are also available separately. Professional installation is recommended, and verification of truck configuration is advised before ordering.

What's Included: Borla Touring Cat-Back Exhaust System, true-dual exhaust tubing, internal H-pipe muffler assembly, black chrome exhaust tips, and installation hardware as supplied by the manufacturer. This product may require emissions-related acknowledgment where applicable; confirm local requirements before installation.

Features:

• Internal H-Pipe: Helps balance exhaust pulses, improve flow, and deliver a refined performance-oriented sound.
• True Dual Exhaust: Provides separate exhaust paths for improved flow and a distinctive dual-exit appearance.
• Premium T-304 Stainless Steel: Resists corrosion and provides durable performance for long-term use.
• Patented Straight-Through and Multi-Core Technology: Supports increased exhaust velocity, power potential, driving response, and Borla's recognizable sound.

Fitments:
2014 Toyota Tundra 1794 Edition
2014 Toyota Tundra Limited
2014 Toyota Tundra Platinum
2014 Toyota Tundra SR
2014 Toyota Tundra SR5
2015 Toyota Tundra 1794 Edition
2015 Toyota Tundra Limited
2015 Toyota Tundra Platinum
2015 Toyota Tundra SR
2015 Toyota Tundra SR5
2015 Toyota Tundra TRD Pro
2016 Toyota Tundra 1794 Edition
2016 Toyota Tundra Limited
2016 Toyota Tundra Platinum
2016 Toyota Tundra SR
2016 Toyota Tundra SR5
2016 Toyota Tundra TRD Pro
2017 Toyota Tundra 1794 Edition
2017 Toyota Tundra Limited
2017 Toyota Tundra Platinum
2017 Toyota Tundra SR
2017 Toyota Tundra SR5
2017 Toyota Tundra TRD Pro
2018 Toyota Tundra 1794 Edition
2018 Toyota Tundra Limited
2018 Toyota Tundra Platinum
2018 Toyota Tundra SR
2018 Toyota Tundra SR5
2019 Toyota Tundra 1794 Edition
2019 Toyota Tundra Limited
2019 Toyota Tundra Platinum
2019 Toyota Tundra SR
2019 Toyota Tundra SR5
2019 Toyota Tundra TRD Pro
2020 Toyota Tundra 1794 Edition
2020 Toyota Tundra Limited
2020 Toyota Tundra Platinum
2020 Toyota Tundra SR
2020 Toyota Tundra SR5
2020 Toyota Tundra TRD Pro
2021 Toyota Tundra 1794 Edition
2021 Toyota Tundra Limited
2021 Toyota Tundra Nightshade
2021 Toyota Tundra Platinum
2021 Toyota Tundra SR
2021 Toyota Tundra SR5
2021 Toyota Tundra Trail
2021 Toyota Tundra TRD Pro

Air Freight Prohibited: false
Not Carb Approved: false
Carb Acknowledgement Required: true
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: N/A
Regular Stock: t
Units Per Sku: 1