SKU: 93600655898

Borla 40477 - Specialty Muffler Un-Notched Neck

Sale price$184.05 Regular price$204.50
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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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4.1 ★★★★★
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Kyla
Chelsea, US
★★★★★ 5
Great toddler pillow
Size: 2.7"H (Standard)
We decided to get this for a toddler pillow for our son. I'm a little intense about what kinds of materials he is exposed to and I feel comfortable with latex. The pillow cover is synthetic and I'm not sure how I feel about that, but it is removable. It seems really comfortable for him--supportive but soft. He loves sleeping on it. And I don't have to worry about him burying his face in an ultra lofty pillow that would be making me nervous all night. I might buy one for myself and my husband at some point too!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 19, 2025
Y
Verified Purchase
Young bok sim
Waukegan, US
★★★★★ 1
Too thin...
Size: 2.7"H (Standard)
It is way too thin and doesn't even feel like real latex. Disappointed."
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Reviewed in the United States on May 26, 2026
R
Verified Purchase
Ranil Wijeratne
Battle Creek, US
★★★★★ 4
Good pillow
Size: 2.7"H (Standard)
Good
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 17, 2026
T
Verified Purchase
Thrifty Shopper
West Palm Beach, US
★★★★★ 5
Buy if you love flat pillows
Love the fact the pillow can be separated into two sections. The thinner section is perfect for stomach sleeping; add the other piece for side sleeping. Add a down pillow for back sleeping. The pillow is fluffy, unlike the rock slab feeling of memory foam.
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Reviewed in the United States on March 31, 2026
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Verified Purchase
Tom Baldwin
Alexandria, US
★★★★★ 2
Only about 1.75 inches thick, and hard as a rock.
Size: 2.7"H (Standard)
This is nowhere near the 2.7 inches advertised. After waiting 4 days for it to expand, it never got higher than 1.75 inches from bottom to the highest point. Also, I'm not sure what kind of Talalay they claim to use; this was hard as a rock.
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Reviewed in the United States on October 28, 2025

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