SKU: 1608082400

Borla 40664 - ProXS(tm) Muffler Un-Notched Neck

Sale price$144.00 Regular price$160.00
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Ships within 48 hours · Estimated delivery Jul 25 - Jul 30

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Description

Borla 40664 - ProXS(tm) Muffler Un-Notched NeckReversible 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

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; Pro XS Series; T-304 Stainless Steel; 9-1/2 Inch Width X 4 Inch Height Case; Single 2-1/4 Inch Center Inlet; Single 2-1/4 Inch Offset Outlet; 19 Inch Body/24 Overall Length

Features & Benefits

  • BORLA(R) ProXS™ 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
  • Built From High-Quality T-304 Stainless Steel, Will Not Rust
  • 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: Center Single
  • Inlet Diameter (IN): 2-1/4 Inch
  • Outlet Position: Offset Single
  • Outlet Diameter (IN): 2-1/4 Inch
  • Universality: Fully Universal
  • Estimated Install Time (Hours): 1
  • Case Diameter (IN): 9-1/2 Inch X 4 Inch
  • Case Length (IN): 19 Inch
  • Overall Length (IN): 24 Inch
  • Color/ Finish: Silver Bare
  • Material: Stainless Steel
  • Wall Type: Single Wall
  • Includes Tip: Without Tip
  • Tip Length (IN): Without Tip
  • Tip Diameter (IN): Without Tip
  • Tip Finish: Without Tip
  • Tip Material: Without Tip


Specifications:

Description_ASM ProXS(tm) Muffler 2.25" Offset Inlet/ 2.25" Center Outlet, 4" x 9.5" Oval, 14" Long Body, 19" Overall Length. Universal Part. Reversible Design.
Description_DEF Exhaust Muffler
Description_DES ProXS(tm) Muffler - Un-Notched Neck
Description_EXT ProXS(tm) Muffler 2.25" Offset Inlet/ 2.25" Center Outlet, 4" x 9.5" Oval, 14" Long Body, 19" Overall Length. Universal Part. Reversible Design.
Description_FAB Reversible design
Description_FAB Universal muffler
Description_FAB Alternate muffler with Notched necks is 400483. Use 1" wide band clamps 18322.
Description_FAB Un-Notched necks are designed for weld in installation. If clamping, use 3" wide band clamps 18003.
Description_INV BORLA(r) ProXS Muffler
Description_MKT 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 ProXS(tm)


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: 1608082400

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4.4 ★★★★★
Based on 24 reviews
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A
Verified Purchase
Alice
Battle Creek, US
★★★★★ 5
Nice Phone mount
Great phone mount—stable, easy to use, and gets the job done! I’ve been using this phone mount for a few weeks now, and it’s exceeded my expectations. It holds my phone securely, even on bumpy roads, and the adjustable arm makes it super easy to get the right angle. Installation was a breeze—took less than 2 minutes. The grip is strong without scratching the phone, and it feels sturdy overall. Highly recommend if you’re looking for a reliable mount!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 2, 2025
K
Verified Purchase
Kye-won Ahn
Massapequa, US
★★★★★ 5
Perfect Phone Mount: Secure, Versatile, and Easy to Install!
This phone mount has truly exceeded my expectations! It’s incredibly easy to install and holds my phone securely in place, providing total peace of mind while driving. What really sets this mount apart is its impressive versatility—I've never seen anything quite like it. The base attaches firmly to the air vent, and the adjustable arm allows me to position my phone precisely where I want it, with the freedom to tilt it up, down, left, or right. Plus, it doesn’t interfere with air flow from the AC, which is a huge bonus. Although my wife's phone case isn't MagSafe-compatible, the included metal ring works seamlessly with it, and my MagSafe case connects just as smoothly. I couldn’t recommend this product more—it’s been an absolute game-changer for us! This is a personal purchase, and I’m thrilled with it. I’ll be sure to update if anything changes.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 12, 2024
A
Verified Purchase
Austin T.
Houston, US
★★★★★ 5
Secure and great fit
I gave this product a chance and it did not disappoint! I did not need to read any instructions for installation and was able to quickly and easily figure it out. Installation takes less than 5 minutes. Just align the mount to the top corner of your tesla screen and turn the dial to adjust the tightness. Once tightness is set, just test to see if it’s really fitted by wiggling it around to check for looseness. I like the fact that I can adjust the angles of the mount easily. My phone can be angles to be on top or side of the Tesla screen. When driving, my phone does not shake one bit. When it’s time to remove my phone, just give it a quick pull to detach and that’s it. The build quality is also very nice and I like the design of it overall. I think it’s a well thought out product. Definitely would recommend to friends and family with Teslas.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 28, 2025
J
Verified Purchase
Jim Burgett
Belleville, US
★★★★★ 4
Good mount but…
This is a solid mount for the Tesla monitor but the mounting points on the corner of screen caused my screen protector to bubble up. I had to return it unfortunately.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 4, 2026
M
Verified Purchase
Ms. Jfuller
Birmingham, US
★★★★★ 5
Tesla 😋😉 jeep phone mount.
Bought this to go in my jeep, perfectly attached to the corner of the screen of the screen, the only down side is since my screen raises and lowers over time with the vibration of the jeep it does make the screen slide down. But the magnet holds the phone very well as long as it is aligned properly to the back of the phone. I know it say tesla mount but my choice of smart stereo for my jeep is not a flush mount, it sticks out and has a cd player in the deck. As well the screen raises and lowers for access to to the cd player. So perfect for my jeep.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 24, 2026

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