🚀 Elevate Your Ride with Borla's ProXS Muffler!
The Borla 40664 ProXS Muffler is a high-performance exhaust solution designed for enthusiasts seeking a powerful sound and durability. Made from corrosion-resistant aircraft-quality stainless steel, this universal muffler features a reversible design, making it easy to install in various configurations. With a compact size of 19 inches overall length and a lightweight build of just 5 pounds, it enhances your vehicle's performance while ensuring longevity. Proudly manufactured in the USA, this muffler is a must-have for any serious car lover.
| Manufacturer | Borla Performance Industries |
| Brand | Borla |
| Model | Borla 40664 |
| Item Weight | 5 pounds |
| Country of Origin | USA |
| Item model number | 40664 |
| Is Discontinued By Manufacturer | No |
| Exterior | Painted |
| Manufacturer Part Number | 40664 |
| OEM Part Number | 40664 |
R**S
Worth the money
Installed this on my 2003 Toyota Tacoma 4wd extra cab pickup with 3.4L engine...I was looking for a decent sound but not overly loud and this delivered perfectly...Seems to have improved throttle response after adding a cold air intake kit...Used stock pipe in front of muffler cut off from OEM exhaust and AP tailpipe with stainless steel band clamps...Installed in less than 30 minutes...Definitely would recommend!
S**E
Great on 3rd gen 4Runner
Went from a JLA? muffler (cant remember which one) to this on my s/c 3.4l 3rd gen 4Runner. It sounds great, nice deep sound without being too loud. The sound is way higher quality than I was expecting, to be honest. I just wanted something a bit quieter than what I had. At stop lights its so quiet and smooth inside the vehicle that I sometimes think my truck stalled for a quick second. But when you punch it, you get a mean sound that is not obnoxiously loud or cheap sounding.
G**H
Good sound.
Sounds good on my 96 3.4 Tacoma. Maybe should have went with the non xl model but still quality muffler.
C**I
Good sounding muffler for a good price.
Installed on a 99 4runner, sounds pretty good without too much drone. Sounds much better than the 40 series flowmaster that was on my old one.
C**S
3rd gen 4runner 3.4L use the 40665 borla
Got this for my 2000 4runner 3.4L and it’s great. Only thing I was sort of bummed about is that I realized our stock exhaust system is 2.5” not 2.25” like this muffler.. I still installed it just fine with a couple reducers but it would’ve been waaaayyyyy easier with the 40665 borla.... sounds great, more ground clearance, weight savings.. can’t complain for 130$ish total it sure beats spending 6-800$ on a cat back exhaust system.
B**G
Sounds great with little to no drone
Put on my 2002 toyota 4runner 3.4. Sounds great with little to no drone, only slightly at 2k rpms. I would highly recommended this especially for the great price.
J**
Read reviews
I received the borla XS not the XL
R**D
Just a bit louder then stock
If your looking for some just a bit louder than stock but with more of a deeper tone this is definitely for you. But this is definitely more quiet then the 14 inch body version. Installed on a 00 tacoma 3.4L
Trustpilot
2 weeks ago
1 week ago