Australia-wide shipping on performance, 4x4 and vehicle-specific upgrades.

Borla Specialty Muffler 2.75in Center In/Out 6.75in Dia. 24in Body 29in OAL S-Type Un-Notched

SKU: BOR401664

Mufflers

BOR S-Type Muffler...

Borla Specialty Muffler 2.75in Center In/Out 6.75in Dia. 24in Body 29in OAL S-Type Un-Notched

SKU: BOR401664

Mufflers

BOR S-Type Muffler...

A$502.69
Limited Availability from MFR Limited stock available from the manufacturer's distribution centre. The dispatch timeframe shown is an estimate based on historical orders of this part. This item is not held in our own warehouse, and availability and release timing may vary depending on manufacturer stock movements and processing at the time of ordering.
View cart
We accept
American Express
Mastercard
Visa
PayPal Checkout
Direct Deposit
Afterpay
Apple Pay
Google Pay
Zip Pay

Description

Developed for truck applications and other applications that require a long body muffler. This muffler is considered an "S-Type" muffler when compared to the 7.75" diameter x 24" long body BORLA(r) Specialty mufflers and used on the same application. Un-notched necks are designed for weld in installation. Alternate muffler with Notched necks is 400130. Use wide band style clamps 18327 (clamps not included). Reversible design for installation flexibility. High-quality T-304 austenitic stainless steel for superior corrosion resistance. 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.

Product Overview

Developed for truck applications and other applications that require a long body muffler. This muffler is considered an "S-Type" muffler when compared to the 7.75" diameter x 24" long body BORLA Specialty mufflers and used on the same application. Un-notched necks are designed for weld in installation. Alternate muffler with Notched necks is 400130. Use wide band style clamps 18327 (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 's Million-Mile warranty. Just what you'd expect from the world's most experienced (and most winning) exhaust brand.


Features and Benefits

  • Universal muffler. Reversible design.
  • Long body design works well on SUV and truck applications
  • Un-notched necks are designed for weld in installation. If clamping, use 3" wide band clamps 18005.

Product Details

Construction:All Welded
Description:Borla Specialty Muffler 2.75in Center In/Out 6.75in Dia. 24in Body 29in OAL S-Type Un-Notched
Grade Type:Performance
Material:T-304 Stainless Steel
Part Number:bor401664
Prop 65 (C, R or CR):CR
Prop 65 - Long Label:WARNING: This product in the physical form it is sold does not present a hazard. However, operations including, but not limited to welding, brazing, or thermal cutting can expose you to chemicals including Chromium, Nickel, Cobalt, Arsenic, Cadmium and Lead which are known to the State Of California to cause cancer, birth defects and other reproductive harm. For more information go towww.P65Warnings.ca.gov
Prop 65 - Short Label:Proposition 65 Warning.JPG
Prop 65 Yes/No:Yes
Title Extended:Specialty Muffler Part # 401664
Title:Specialty Muffler
Warranty:Million-Mile warranty on systems and parts

Application Summary

Specialty Muffler - Heavy Duty (Truck) - 2.75" Center Inlet/ 2.75" Center Outlet 6.75" Round 24" Long Body 29" Overall Length. Universal Part. Reversible Design. Un-notched Neck.

Part Type

Exhaust Muffler

Data: v4.2 - Upd: 2026-10-13 15:24:47

Features

  • Alternate muffler with Notched neck is 400130. Use 1" wide band clamps 18327.
  • Long body design works well on SUV and truck applications
  • Un-notched necks are designed for weld in installation. If clamping, use 3" wide band clamps 18005.
  • Universal muffler. Reversible design.

Specifications

Product Attributes - Brand
Borla
Product Attributes - Manufacturer's Part Number
401664
Product Attributes - Part Type
Mufflers
Product Attributes - Product Line
Borla S-Type Mufflers
Product Attributes - UPC
808422016643
Product Attributes - Muffler Material
304 stainless steel
Product Attributes - Inlet Diameter (in.)
2.75 in.
Product Attributes - Outlet Diameter (in.)
2.75 in.
Product Attributes - Inlet Quantity
1
Product Attributes - Outlet Quantity
1
Product Attributes - Inlet Location
Center
Product Attributes - Outlet Location
Center
Product Attributes - Case Shape
Round
Product Attributes - Reversible
Yes
Product Attributes - Internal Construction
Perforated stainless tube with packing
Product Attributes - Muffler Finish
Natural
Product Attributes - Case Exterior Length (in.)
24.00 in.
Product Attributes - Case Outside Diameter (in.)
6.75 in.
Product Attributes - Overall Length (in.)
29.00 in.
Product Attributes - Thickness (in.)
6.750
Product Attributes - Width (in.)
6.750 in.
Product Attributes - End Cap Material
Stainless steel
Product Attributes - End Cap Color
Natural
Product Attributes - End Cap Type
Round
Product Attributes - Outlet Style
Standard, without tip
Product Attributes - Remanufactured
No
Product Attributes - Quantity
Sold individually.
Product Attributes - Notes
Features non-notched neck for weld-in installation.

Reference Information

Brand Name/s Borla
StreetFX SKU bor401664
SFX Item ID 4225694
Supplier Item Code 4225694
Manufacturer SKU 401664
Manufacturer UPC 808422016643
Alternative References 2.75in, 6.75in, 24in, 29in

Compatibility

Specialty Muffler - Heavy Duty (Truck) - 2.75" Center Inlet/ 2.75" Center Outlet 6.75" Round 24" Long Body 29" Overall Length. Universal Part. Reversible Design. Un-notched Neck.

Loading compatibility information...

Keep shopping

More from Borla