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Borla 40358 ProXS Straight-Through Performance Muffler

Part of: Borla ProXS Straight-Through Performance Muffler

Other options in this family: Borla 40349 Borla 40352 Borla 40357 Borla 40347 Borla 40351

Manufacturer

Picture for manufacturer Borla

Part Number

40358
11 reviews
Sale Price

$129.99

In Stock (10+)

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Usually delivered within 2 days

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Fitment guaranteed

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Product Details

The Borla 40358 ProXS muffler delivers exceptional exhaust flow and performance through its straight-through design. Engineered without restrictive chambers or baffles, this universal muffler maximizes exhaust velocity while maintaining Borla's signature sound quality.

Key Features:

  • Straight-through perforated core design for maximum flow efficiency
  • Reversible installation - can be mounted in either direction
  • Center inlet with offset outlet configuration (or reverse as offset-in/center-out)
  • Un-notched neck design for universal fit applications
  • Constructed from premium T-304 stainless steel for durability and corrosion resistance
  • Packed with high-temperature acoustical absorption material
  • Made in the USA with Borla's Million-Mile Warranty

This ProXS muffler (formerly known as Borla Turbo series) provides a moderate sound level that's ideal for street and performance applications. The unrestricted design reduces backpressure and helps unlock horsepower gains while delivering the distinctive Borla exhaust note.

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Products specifications

Case Length (in)

14.000 in.

Case Shape

Oval

Inlet Diameter (in)

2.500 in.

Inlet Location

Offset

Inlet Quantity

Single

Internal Construction

Straight-through baffled

Muffler Finish

Natural

Muffler Material

Stainless steel

Outlet Diameter (in)

2.500 in.

Outlet Location

Center

Outlet Quantity

Single

Outlet Style

Standard, without tip

Quantity

Sold individually.

Thickness (in)

4.000 in.

Width (in)

9.500 in.

Inlet Type

Single Center Inlet

Body Height (in.)

4

Body Length (in.)

14

Body Width (in.)

9.5

Inlet Size (in.)

2.5

Outlet Size (in.)

2.5

Overall Length (in.)

19

Body Length

14.000 in.

Inlet Inside Diameter

2.500 in.

Overall Length

19.000 in.

Outlet Outside Diameter

2.500 in.

Body Width

9.500 in.

Off Road Use Only

No

Prop 65

WARNING: Cancer and Reproductive Harm - www.p65warnings.ca.gov

Construction

All Welded

Inlet Connection Type

Pipe

Shape

Oval

Inlet Position

Center

Main Piping Diameter

2.500 in.

Title Extended

ProXS Muffler? 2.5" Offset/Center 14"x4"x9.5" Part # 40358

Outlet Type

Single Offset Outlet

Body Height

4.000 in.

Material

T-304 Stainless Steel

Inlet Outside Diameter

2.500 in.

Outlet Position

Offset

Muffler Count

1

Inlet Type

Single Center

Grade Type

Performance

Overall, a very quick and easy experience

Great

Delivery was 1 week.

A very cost effective alternate to auto parts for the shade tree mechanic.

easy to purchase.

Thank you

Great shopping experience

Lowest price I could find in the net. It was easy to order. Delivered on time. I'll buy again.

Great pricing, fast shipping, A+++

Extremely fast shipping - shipped the next business day and I was notified via email about everything. Also, VERY good pricing on the products AND shipping. Thanks!

great price free shipping thanks

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