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Description
Borla 140839 - Cat-Back(tm) Exhaust System ATAK(r)Developing systems for the C8 Corvette presented BORLA(r) engineers with unique challenges, but our team was up to the challenge. Great care was taken to ensure the integrity and function of the system as well as the vehicle itself. Part number 140839BC includes both AFM and NPP dual mode exhaust valves. It features the ATAK(r) sound level, our most aggressive sound. It provides a more exciting driving experience without any drone. It features our
Developing systems for the C8 Corvette presented BORLA(r) engineers with unique challenges, but our team was up to the challenge. Great care was taken to ensure the integrity and function of the system as well as the vehicle itself. Part number 140839BC includes both AFM and NPP dual mode exhaust valves. It features the ATAK(r) sound level, our most aggressive sound. It provides a more exciting driving experience without any drone. It features our Polyphonic Harmonizer and SwitchFire(tm) technology. BORLA(r)'S Polyphonic Harmonizer Technology 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. Completely eliminating the turbulent center intersection of a standard X-Pipe, BORLA(r)'S patented SwitchFire(tm) design truly blends the combustion pulses from both sides of the engine for improved performance and a custom aggressive sound. Strategically placed heat shielding is included to prevent exhaust heat damage and protect your Corvette. It comes with 4" Bright Chrome on T-304 stainless steel tips and is also available with Black Chrome on T-304 stainless steel tips part number 140839BC, or Carbon Fiber tips part number 140839CF. The system is constructed using T-304 stainless steel and is backed by our Million Mile Warranty. System ships in 2 boxes., Note: After installation of the BORLA(r) system, the controllers for the AFM and NPP valves in the exhaust system should be re-calibrated according to GM Document ID 5406413. BORLA(r) recommends taking your car to the nearest Chevrolet dealer for exhaust valve recalibration services., System Features:, Cat-Back(tm) Exhaust System, Includes AFM and NPP Valves, ATAK(r) Sound Level, SwitchFire(tm) Technology, Heat Shielding, 4" Bright Chrome On T-304 Tips, T-304 Stainless Steel Construction, Million Mile Warranty
Specifications:
| Description_ASM | 2020-2023 Chevrolet Corvette (C8) 6.2L V8 Automatic Transmission Rear Wheel Drive 2 Door With AFM Valves With NPP Valves. |
| Description_DEF | Exhaust System Kit |
| Description_DES | Cat-Back(tm) Exhaust System - ATAK(r) |
| Description_EXT | ATAK(r) Axle-Back Exhaust System 2020-2023 Chevrolet Corvette (C8) 6.2L V8 Automatic Transmission Rear Wheel Drive 2 Door. |
| Description_FAB | 4" Bright Chrome On T-304 Stainless Steel Tips |
| Description_FAB | T-304 Stainless Steel Construction |
| Description_FAB | Valve actuator recalibration required after installation |
| Description_FAB | Heat Shielding |
| Description_FAB | ATAKType Sound Level |
| Description_FAB | Cat-Back Exhaust System |
| Description_FAB | Includes AFM and NPP Valves |
| Description_FAB | Million Mile Warranty |
| Description_FAB | SwitchFire? Technology |
| Description_FAB | System contains Polyphonic Harmonizer and SwitchFire(TM) Technology |
| Description_FAB | System includes AFM and NPP Valves. Do NOT install on vehicles without O.E. NPP Valves. |
| Description_FAB | System ships in 2 boxes |
| Description_INV | Borla(r) Cat-Back(tm) System |
| Description_MKT | Developing systems for the C8 Corvette presented BORLA(r) engineers with unique challenges, but our team was up to the challenge. Great care was taken to ensure the integrity and function of the system as well as the vehicle itself. Part number 140839BC includes both AFM and NPP dual mode exhaust valves. It features the ATAK(r) sound level, our most aggressive sound. It provides a more exciting driving experience without any drone. It features our Polyphonic Harmonizer and SwitchFire(tm) technology. BORLA(r)'S Polyphonic Harmonizer Technology 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. Completely eliminating the turbulent center intersection of a standard X-Pipe, BORLA(r)'S patented SwitchFire(tm) design truly blends the combustion pulses from both sides of the engine for improved performance and a custom aggressive sound. Strategically placed heat shielding is included to prevent exhaust heat damage and protect your Corvette. It comes with 4" Bright Chrome on T-304 stainless steel tips and is also available with Black Chrome on T-304 stainless steel tips part number 140839BC, or Carbon Fiber tips part number 140839CF. The system is constructed using T-304 stainless steel and is backed by our Million Mile Warranty. System ships in 2 boxes., Note: After installation of the BORLA(r) system, the controllers for the AFM and NPP valves in the exhaust system should be re-calibrated according to GM Document ID 5406413. BORLA(r) recommends taking your car to the nearest Chevrolet dealer for exhaust valve recalibration services., System Features:, Cat-Back(tm) Exhaust System, Includes AFM and NPP Valves, ATAK(r) Sound Level, SwitchFire(tm) Technology, Heat Shielding, 4" Bright Chrome On T-304 Tips, T-304 Stainless Steel Construction, Million Mile Warranty |
| Description_SHO | Cat-Back(tm) System |
| Description_SLA | ATAK Cat-Back Exhaust System; 3 in.; Incl. Connecting Pipes/Mufflers/Hardware/4 in. Round x 4.75 in. Long Rolled Angle-Cut; Dual Split Rear Exit; |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.8 ★★★★★
Based on 29 reviews
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Product Reviews
★★★★★ 5
No problems all the way to the end of the spool
Style: String Trimmer
I had an old Greenworks string trimmer that I found in the basement after I moved into my new home. Maybe it was just old, but the auto-feed didn't work well, the line was always running out, and I spent more time rewinding the spool than cutting down weeds. I had almost lost my faith in string trimmers entirely. You can spend $300 on one, but how much better are they? I didn't know. This Black & Decker was only $50, and although it's corded, my roommate convinced me it was worth not having to do the dance of recharging batteries, plus having full 110v power. Some (easy) assembly required out of the box, and this thing was basically plug & play. I did read through the owner's manual first, which gave amateur me some confidence through a few helpful tips. I use it not only for cutting down weeds, but also for cleaning out weeds from the cracks in my sidewalk, and the edger wheel is very helpful for that. More importantly, the line had no problems all the way to the end of the spool. Faith restored, there are good string trimmers in the world.
That being said, be aware that the line it comes with isn't very long. My lawn is medium-size, and it ran out about halfway through. The Black & Decker replacement spools are $10 / 30 ft (much longer), but it goes through line, so this could really add up. Replacing the spool was easy, and I was able to finish my lawn with plenty line to spare. A quick search on Amazon reveals off brand spools at $15 / 12-pack. I haven't tested them yet, but the price difference is so great that I'm going to give them a chance.
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Reviewed in the United States on August 19, 2023
★★★★★ 4
Handy until I can purchase a mower
Style: String Trimmer, Style: String Trimmer
I've used this thing heavily 3 times now. I need a mower but haven't had the spare money for one yet so this is what I'm using! My yard is just under 1 acre. I'ma list some pros and cons I've noticed in my good use..
Pros: it works.. really well! As you can see I live in Florida so grass grows super fast in our rainy season if I slack just 2 weeks oh my.. the power is strong, it's easy to work. Auto feed is a big help. I bought extra when I made this purchase I can go through about 1-2 rolls throughout the whole yard.
Cons: the wire. It gets in the way so much and my large yard I use a 200 ft cord but that's not always enough so I can't complete my job completely but enough I'm happy with. When the auto feed is low i noticed it constantly over feeds the line and that honestly hurts sometimes! It's and easy fix but after doing it 5 times you're over it. Id just put a new one on but I feel that's just a waste.
In the future I will be replacing mine to get rid of the wire.
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Reviewed in the United States on June 26, 2025
★★★★★ 5
Light Weight = Maneuverable
Style: String Trimmer
First time use today. It's works great. The light weight makes it so much more maneuverable than my very heavy 15 year old Echo weed line trimmer with heavy 58V battery. The Echo 58V battery died and did not want to spend $220 for new Echo battery with probably old tech battery. Debated on $300 EGO 56V trimmer and this corded 120VAC Black and Decker weed line trimer for $52. Also purchase a 50 ft AWG14 extension cord. The combination is terrific. Again the light weight is a revelation for me. The 6.5 Amp motor is plenty powerful. The thinner .065 line works well cut everything that needed wacking. The auto line feed works well. The length of tool fits me perfectly - I'm 5-4 so it may not be so good for tall folks. I extended to its max length. I wrapped the extension cord a few loops around the trigger handle and had no issues with cord staying on. Highly recommended with one could deal with extension cord. I don't see an issue with reliability and longevity. The electric motor seem well spec and strong. Really not much to go wrong with it. And no battery to deal with. For my very small yard it works great.
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Reviewed in the United States on March 5, 2026
★★★★★ 5
Great Light Weight String Trimmer and Edger!
Style: String Trimmer
I'm a 60 year old female and bought this because of the light weight. It was easy to put together, however, the instructions that came with it were terrible. It included only black and white images, with no written instruction. I found a great tutorial on YouTube that told how to assemble it and use it, and another on how to change the string. Buy extra string, so you'll have it ready! It does a great job on weeds and ivy. The edger is great. It is adjustable, but probably not the best for anyone taller than 5'6. It's noisy, but not so bad that it requires ear protection. I like that it's corded which makes it lighter and I don't have to fool with gas or heavy batteries.
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Reviewed in the United States on May 8, 2026
★★★★★ 5
Great weed wacker
Style: String Trimmer
Works great. Plenty of power. Did my weeding in a fraction of the time of my battery operated weed wacker
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Reviewed in the United States on May 15, 2026