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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.
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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.
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4.6 ★★★★★
Based on 26 reviews
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Product Reviews
★★★★★ 3
he only like the Dark one
Flavor Name: Bacon & Beef, Size: X-Small
love nylabones for my pup
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Reviewed in the United States on April 29, 2026
★★★★★ 5
My Dog's Favorite Nylabone
Flavor Name: Bacon & Beef, Size: X-Small
I've been testing out Nylabones the last couple months for my chihuahua puppy. He's a heavy chewer and too easily tears apart many of them, then others are too hard and I take them away because I fear for his teeth. This set is his favorite so far. He doesn't care about the peanut butter ones, loves the beef one, and is absolutely obsessed with the bacon one. He walks around with it in his mouth whenever he goes anywhere. Unfortunately, my senior chihuahua also loves the bacon one and there is now an ongoing feud over it, so guess I'm buying another pack. I like that these are just a little chewy without being too soft, but I still recommend keeping an eye on them as even my puppy has managed to start to get little pieces off. But it's more as frayed strings than chunk like I've had happen with some of the softer ones.
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Reviewed in the United States on February 22, 2023
★★★★★ 5
Good for satisfying destruction urges
Flavor Name: Bacon & Beef, Size: X-Small
I have a 30 pound dog who doesn’t want a super hard chew toy, but something that he can destroy into pieces. It really helps with his destruction urges.
Even though my dog is 18 months old, this puppy chewer is perfect for him. Once he chews it up into little pieces, I am able to pick them up, and by the time he is done, he is relaxed and or asleep.
Highly recommend for puppies, of course, but if you have a dog who needs to destroy, this is the perfect thing to do that with! It is good value for the money and better than other household items that he could be chewing on.
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Reviewed in the United States on December 24, 2024
★★★★★ 5
Durable, lightweight, dogs love em
Color: Purple
The most durable, perfect weight,all 3 dogs have the best time chewing them. Easy to unpack and carry around. All 3 dogs enjoy, this is my 2nd time purchasing in a year, they last about 6 months per purchase time
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Reviewed in the United States on May 17, 2026
★★★★★ 5
Perfect for the aggressive chewer
Color: Purple
I purchased these because I have a 1-year-old black lab redbone coonhound mix who destroys every toy and Bone. I have gotten him in a short amount of time... These things have outstanded this little guy and he is still enjoying them!
Keeps him occupied and satisfies his chewing for hours!
And he leaves my shoes alone haha
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Reviewed in the United States on June 10, 2026