SKU: 93600655898

Borla 40477 - Specialty Muffler Un-Notched Neck

Sale price$184.05 Regular price$204.50
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Ships within 48 hours · Estimated delivery Aug 6 - Aug 11

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Description

Borla 40477 - Specialty Muffler Un-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 2. 5" Offset Inlet Dual 2. 5" Offset Outlets. The inlet and one outlet are on one end of the muffler, and the second outlet is on the opposite end. Reversible design for

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 2.5" Offset Inlet/ Dual 2.5" Offset Outlets. The inlet and one outlet are on one end of the muffler, and the second outlet is on the opposite end. 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.

Exhaust Muffler; T-304 Stainless steel; 10-1/4 Inch Width x 5-1/2 Inch Height Case; Single 2-1/2 Inch Offset Inlet; Dual 2-1/2 Inch Outlet; 19 Inch Body/24 Overall Length

Features & Benefits

  • BORLA® Specialty Mufflers Are Designed For Supreme Street Performance
  • Offering Aircraft Quality High Quality T-304 Stainless Steel, All Welded Construction And More For Increased Horsepower And Torque
  • Independent Tests Prove Maximum Flow Capability
  • All BORLA® Mufflers Are Manufactured Using Ultra Durable, Continuous Strand Sound Absorbing Composite Filament
  • Unique, Proprietary Frequency Cancelling Technology Makes Sound Waves Travel Between Multiple Core Walls While Also Increasing Exhaust Gas Velocity
  • Flared Collectors On Both Ends Increase The Internal Diameter Of The Muffler Allowing For Optimal Flow
  • Limited Million Mile Warranty

Attributes

  • Shape: Oval
  • Inlet Position: Offset Single
  • Inlet Diameter (IN): 2-1/2 Inch
  • Outlet Position: Offset Dual
  • Outlet Diameter (IN): 2-1/2 Inch
  • Case Diameter (IN): 10-1/4 Inch X 5-1/2 Inch
  • Case Length (IN): 19 Inch
  • Overall Length (IN): 24 Inch
  • Includes Tip: No
  • Universality: Fully Universal
  • Tip Finish: No Tip
  • Estimated Install Time (Hours): 1
  • Color/ Finish: Bare
  • Material: Stainless Steel
  • Wall Type: Single Wall
  • Internal Construction: Straight Through Single Core
  • Tip Length (IN): No Tip
  • Tip Diameter (IN): No Tip
  • Tip Material: No Tip


Specifications:

Description_ASM Specialty Muffler - Transverse Flow - 2.5" Offset Inlet/ Dual 2.5" Offset Outlets 6" x 10.25" Oval x 19" Long Body 24" Overall Length. Universal Part. Reversible Design.
Description_DEF Exhaust Muffler
Description_DES Specialty Muffler - Un-Notched Neck
Description_EXT Specialty Transverse Flow Muffler - 2.5" Offset Inlet/ Dual 2.5" Offset Outlets 6" x 10.25" Oval x 19" Long Body 24" Overall Length. Universal Part. Reversible Design.
Description_FAB Transverse flow design, originally designed for F-Body Camaro and Firebirds
Description_FAB Universal muffler. Reversible design.
Description_FAB Alternate muffler with Notched necks is 400498, use band clamp 18325
Description_FAB Un-Notched necks are designed for weld in installation. If clamping, use band clamps 18004.
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 2.5" Offset Inlet/ Dual 2.5" Offset Outlets. The inlet and one outlet are on one end of the muffler, and the second outlet is on the opposite end. 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:
  1. 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
SKU: 93600655898

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Michael
Cuba, US
★★★★★ 4
Almost Perfect
If you’ve ever seen these things, the foldable ones are just as good as the standard ones. I just wish when you folded it up there was a way to lock it into that position. When you unfold it to play, you lock it into place with the orange locking slide so it doesn’t fold up on you. But when you’re done playing and fold it up, there’s no way to lock it into that position, it can keep unfolding if you carry it around with you, plus the orange locking slide keeps sliding up and down. It’s not a huge deal, but they could’ve made it better.
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Reviewed in the United States on April 29, 2026
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SC
Cuba, US
★★★★★ 5
Helpful
I’ve used Chuckit ball launchers, this one is foldable, great for my back pack when camping with my dog
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Reviewed in the United States on February 27, 2026
H
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HB
Carnegie, US
★★★★★ 5
Really indestructible
Color: Yellow
As advertised. I have an obsessed 16lb mixed breed dog that has destroyed everything purchased that says indestructible. Until now... These balls really are indestructible. She loves them and plays with 2-3 at a time. Chews on them and still going. They are the size of regular tennis balls. Others are slightly smaller. These are great and bright... Mooky highly recommends.
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Reviewed in the United States on March 25, 2026
A
Verified Purchase
April Rumschlag
Whiting, US
★★★★★ 5
A Dog’s REAL Best Friend!
Color: White, Color: White
This ball is truly my dog’s best friend! It is perfect especially for indoor fetch because it’s lightweight (AKA nondestructive!), has just the right amount of bounce, and cannot be torn up by mild to medium chewers. (We have a labradoodle and she isn’t much of a chewer.) It really is bite resistant, and I have a video to prove it! Our dog loves the softness of it. We love that we can throw it around the house without it breaking anything. It almost feels like heavy duty bouncy styrofoam that cannot be picked at or bitten up. We bought the pack and are storing a couple of them for when we someday lose them here and there. I recommend this ball to EVERYone who has a dog and likes to play fetch! FOFOS, pick us for ads! My doggie is obsessed with your product, and I love taking pics and videos of her using it. She’s the type of dog that walks around with a ball in her mouth for fun and comfort. Think of it as her stuffed animal.
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Reviewed in the United States on December 3, 2025
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Chuck Conner
Los Angeles, US
★★★★★ 5
Great buy!
Color: Yellow
Dogs love them! They chew on the and the are very sturdy!
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Reviewed in the United States on April 20, 2026

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