Borla 40358 ProXS Universal Muffler 2.5" Offset In/Center Out 14" Oval T-304 SS

Vehicle Fitment

• Universal Fitment - Fits Import and Domestic Cars and Trucks with 2.5" Exhaust Tubing

Fitment Notes

• Universal muffler requires professional fabrication for proper installation
• Un-notched necks designed for weld-in installation
• For clamp installation, use Borla 3" wide band clamps (Part# 18004)
• Reversible design allows inlet/outlet orientation flexibility
• Alternate notched neck version available (Part# 400480) for use with 1" wide band clamps (Part# 18325)
• Verify adequate clearance for 4" height x 9.5" width oval body
• Professional exhaust shop installation recommended

Features

• Straight-through internal design for maximum exhaust flow and performance
• Deep, aggressive exhaust tone with mild volume suitable for street use
• 100% welded construction for superior strength and durability
• Reversible design allows mounting in either direction for installation flexibility
• Premium T-304 austenitic stainless steel construction inside and out
• Natural mill finish can be brushed or polished prior to installation
• High chromium and nickel content provides maximum corrosion resistance
• Improves exhaust flow for increased horsepower and torque
• Made in USA

Specifications

• Part Number: 40358
• Brand: Borla
• Series: ProXS
• Type: Universal Performance Muffler
• Internal Design: Straight-Through
• Inlet Diameter: 2.5 inches
• Inlet Location: Offset
• Outlet Diameter: 2.5 inches
• Outlet Location: Center
• Body Shape: Oval
• Body Dimensions: 4" Height x 9.5" Width
• Body Length: 14 inches
• Overall Length: 19 inches
• Material: T-304 Austenitic Stainless Steel
• Construction: 100% Welded
• Neck Style: Un-Notched (Weld-In)
• Finish: Natural Mill
• Reversible: Yes
• Quantity: Sold Individually
• Country of Origin: USA
• UPC: 808422403580
• Warranty: Borla Million-Mile Warranty

Included Components

• 1 Borla ProXS Universal Muffler

Product Description

The Borla 40358 ProXS Universal Muffler delivers premium exhaust performance at an accessible price point. Featuring Borla's proven straight-through internal design, this muffler maximizes exhaust flow while producing a deep, aggressive tone that commands attention without excessive volume. Constructed entirely from premium T-304 austenitic stainless steel with 100% welded construction, the ProXS offers superior corrosion resistance and durability compared to mild steel, aluminized, or 409 stainless alternatives. The reversible design and offset inlet/center outlet configuration provide installation flexibility for custom exhaust applications on both import and domestic vehicles. Un-notched necks are optimized for weld-in installation, ensuring a permanent, leak-free connection. Made in the USA and backed by Borla's industry-leading Million-Mile Warranty, the ProXS muffler is ideal for enthusiasts building custom exhaust systems who demand the legendary Borla sound and quality.