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

BORLA 140638 is a 2.25" diameter full True Dual, split rear exit, Cat-Back™ system with single 4" round bright chrome on T-304 stainless steel tips on each tail pipe. A system with black chrome on T-304 stainless steel tips is also available. This system gives the Tundra a great look and a nice performance kick. It delivers the mellow Touring sound with no drone inside the vehicle. The muffler contains an internal H-Pipe for increased performance and improved sound. The full dual system even weighs less than the factory single system, thanks to the lightweight T-304 stainless steel fabrication and, not surprisingly, out flows the stock exhaust. This BORLA dual system even exhibits better fuel economy numbers which is nice for a big truck. 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. 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, Touring Cat-Back Exhaust 2014-2021 Toyota Tundra 4.6L/ 5.7L V8 Auto. Trans. 2 & 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 Million Mile Warranty 2014-2021 Toyota Tundra 4.6L/ 5.7L V8 AT 2 & 4 WD Reg Cab w/ Long Bed (8' 2") 145.7" WB/ Extended (Double) Cab w/ Standard Bed (6' 7") 145.7" Wheelbase/ Crew (CrewMax) Cab with Short Bed (5' 7") 145.7" WB

• Oversize box shipping rates apply to this system
• Muffler contains an internal X-Pipe
• BORLA system is True Dual

Upgrade your compatible Toyota Tundra with the Borla 140638 Touring Cat-Back Exhaust System. Designed for select 2014-2021 Tundra models equipped with the 4.6L or 5.7L V8, this full True Dual exhaust uses a split rear exit and single 4-inch round bright chrome T-304 stainless steel tips on each tailpipe. The system delivers Borla’s mellow Touring sound with minimal interior drone, making it well suited for daily driving and long-distance towing.

The muffler incorporates an internal H-pipe for improved exhaust flow, enhanced performance, and a refined exhaust note. Lightweight T-304 stainless steel construction helps reduce weight compared with the factory single-exhaust design, while precision mandrel bends and CNC manufacturing support smooth flow and accurate fitment. Borla’s patented straight-through and multi-core technology is engineered to increase exhaust velocity and help unlock responsive power, driving enjoyment, and potential fuel-economy improvements.

Built for long-term durability, the Borla 140638 features premium T-304 stainless steel rather than lower-grade 409-style alternatives. The system is compatible with automatic-transmission, two-wheel-drive, and four-wheel-drive Tundra configurations listed below, including Regular Cab models with the long bed, Extended or Double Cab models with the standard bed, and Crew or CrewMax Cab models with the short bed, all using a 145.7-inch wheelbase. Borla backs this exhaust system with its Million-Mile Warranty. Oversize-box shipping rates may apply, and emissions-related requirements should be reviewed before installation.

Brief Description

A durable True Dual Touring Cat-Back exhaust system with split rear exit, improved flow, a controlled sound, and premium stainless steel construction for select Toyota Tundra V8 applications.

Key Product Specifications & Technical Data

• Brand: Borla
• Part Number: 140638
• System Type: Touring Cat-Back
• Vehicle Application: 2014-2021 Toyota Tundra
• Engine Compatibility: 4.6L and 5.7L V8
• Exhaust Configuration: Full True Dual, split rear exit
• Tip Finish: Bright chrome T-304 stainless steel
• Warranty: Borla Million-Mile Warranty

What’s Included

Complete Borla 140638 Touring Cat-Back exhaust system with dual exhaust components, muffler assembly, connecting pipes, and polished bright chrome stainless steel tailpipe tips.

Features:

• True Dual Performance: Full dual exhaust configuration improves flow and delivers a sharper, more responsive exhaust character.
• Touring Sound: Produces Borla’s mellow performance tone with minimal cabin drone for comfortable everyday use.
• Internal H-Pipe: Integrated H-pipe design helps improve exhaust balance, flow, performance, and sound quality.
• T-304 Stainless Steel Construction: Premium stainless steel fabrication, smooth mandrel bends, and CNC-manufactured components provide durability and consistent fitment.

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