SKU: 84247435999

Borla 400499 - Specialty Muffler Notched Neck

Sale price$187.65 Regular price$208.50
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Description

Borla 400499 - Specialty Muffler Notched NeckTransverse Flow design. Transverse flow mufflers were originally designed for GM F Body Camaros and Firebirds. On these vehicles they were mounted behind the rear axle and were parallel to the axle. This muffler can also be used to create custom systems on other vehicles. Single 3" Offset Inlet Dual 2. 5" Offset Outlets. The inlet and one outlet are on one end of the muffler, the second outlet is on the opposite end. Notched necks for clamp on

Transverse Flow design. Transverse flow mufflers were originally designed for GM F-Body Camaros and Firebirds. On these vehicles they were mounted behind the rear axle and were parallel to the axle. This muffler can also be used to create custom systems on other vehicles. Single 3" Offset Inlet/ Dual 2.5" Offset Outlets. The inlet and one outlet are on one end of the muffler, the second outlet is on the opposite end. Notched necks for clamp-on installation using 1" wide band style clamps (clamps not included). Reversible design for installation flexibility. High-quality T-304 austenitic stainless steel will never rust. 100% welded construction for strength. Free Flow design for improved performance. High-temperature continuous-filament fiber (CFF) acoustic material for sound control. Natural mill finish can be brushed or polished prior to installation. Best of all, it's made in the USA and backed by BORLA(r)'s Million-Mile warranty. Just what you'd expect from the world's most experienced (and most winning) exhaust brand.


Specifications:

Description_ASM Specialty Muffler - Transverse Flow - 3" Offset Inlet/ Dual 2.5" Offset Outlets 6" x 10.25" Oval x 19" Long Body 24" Overall Length. Universal Part. Reversible Design. Notched Necks.
Description_DEF Exhaust Muffler
Description_DES Specialty Muffler - Notched Neck
Description_EXT Specialty Transverse Flow Muffler - 3" Offset Inlet/ Dual 2.5" Offset Outlets 6" x 10.25" Oval x 19" Long Body 24" Overall Length. Universal Part. Reversible Design. NOTched Necks.
Description_FAB Alternate muffler with Un-Notched necks is 40474. If clamping, use band clamps 18325 & 18330..
Description_FAB Transverse flow design, originally designed for F-Body Camaro and Firebirds
Description_FAB Universal muffler. Reversible design.
Description_FAB Notched necks are designed for clamp in installation, use band clamps 18325 & 18330.
Description_INV BORLA(r) Transverse Muffler
Description_MKT Transverse Flow design. Transverse flow mufflers were originally designed for GM F-Body Camaros and Firebirds. On these vehicles they were mounted behind the rear axle and were parallel to the axle. This muffler can also be used to create custom systems on other vehicles. Single 3" Offset Inlet/ Dual 2.5" Offset Outlets. The inlet and one outlet are on one end of the muffler, the second outlet is on the opposite end. Notched necks for clamp-on installation using 1" wide band style clamps (clamps not included). Reversible design for installation flexibility. High-quality T-304 austenitic stainless steel will never rust. 100% welded construction for strength. Free Flow design for improved performance. High-temperature continuous-filament fiber (CFF) acoustic material for sound control. Natural mill finish can be brushed or polished prior to installation. Best of all, it's made in the USA and backed by BORLA(r)'s Million-Mile warranty. Just what you'd expect from the world's most experienced (and most winning) exhaust brand.
Description_SHO Transverse Muffler


Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
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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
SKU: 84247435999

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4.2 ★★★★★
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Kimberly R Boggs
Bozeman, US
★★★★★ 5
Great product
Size: 4 Count (Pack of 1)
Amazing product. Really works on your teeth. I’ve noticed my teeth are definitely whiter
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
K
Verified Purchase
Kristina
Cuba, US
★★★★★ 5
Works great! Amazing actually!
Size: 4 Count (Pack of 1)
This works really well! I used it several times and really saw a difference. Unfortunately I had a root canal done and the following day I decided to whiten and I thought I was going to die! I didn’t know my front tooth was going to be that sensitive from the tooth canal. That was my fault and only telling this story as a warning! Do not use this after dental work unless your dentist says ok! Otherwise it works amazingly!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 2, 2026
Z
Verified Purchase
Zero
Louisville, US
★★★★★ 4
Easy to use
Size: 4 Count (Pack of 1)
Continued use is needed for best results
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 14, 2026
N
Verified Purchase
Nicole
Dallas, US
★★★★★ 5
No sensitivity issues and works!
Size: 4 Count (Pack of 2)
I have what I would consider sensitive teeth and this doesn’t bother them one bit. I have used nightly for about 5 nights and can see a difference in color but again, no pain or sensitivity problems! I would recommend to anyone who asks what product to get for whitening teeth.
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Reviewed in the United States on February 25, 2026
J
Verified Purchase
Julian Barrett
Omaha, US
★★★★★ 5
Impressive work...
I've used those whitening kit and it's my first time with something like this. I've done the charcoal toothpaste and working toothpaste and they made small changes to my teeth over a long period of time, but the whitening kit was a bit different. I applied the gel on my teeth and used the LED mouthpiece. There was a small change and a bit of sensitivity in my teeth so I waited a few days for the pain to reduce. I didn't realize that the sensitivity feel for for that very purpose. After a few days I applied another coating and used the sensitivity gel. The results were significant my teeth were two chart shades different. I was very impressed. I would recommend this for whitening your teeth, but if you feel a bit of sensitivity after use, use the sensitivity gel and red light setting on the mouthpiece. It really does help.
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Reviewed in the United States on February 7, 2026

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