Borla Heavy Duty Truck Muffler - 400500

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  • Borla | Part Number: BOR400500
  • Fitment:Universal Fit
  • Type of Muffler:Straight Through
  • Material:Stainless Steel
  • Tube Size (Inlet_Outlet):3 Inches/3 Inches
  • Outlet Location:Centered
  • Inlet Location:Centered


Looking for that Borla sound on a budget? Choose from Borla s many quality mufflers and get that Borla sound you looking for.

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Question & Answers

1 Answered question

Q: What is the sound level inside and outside the cab? Answer this question

A: High-temperature continuous-filament fiber (CFF) acoustic material for sound control. Notched necks are designed for clamp in installation. Use 1" wide band clamps 18330. Decibels is not listed.

Answered by Dave from 4WP HQ on 12/14/2021


BORLA Performance Industries started over 40 years ago, producing exhaust systems for ultra luxury and ultra performance vehicles including Rolls-Royce and Ferrari. From that history, BORLA developed and patented a host of manufacturing techniques that give their stainless steel exhausts the durability and performance that Jeep drivers flock to. BORLA even patented the way the steel is processed for their Cat-Back system, Header and Axle-Back systems. All use premium, high-quality austenitic T-304 stainless steel, which is better than 409 or aluminized steel. The construction of the exhaust systems is entirely welded and produced with mandrel-bent tubing. It's these high-end manufacturing techniques that make BORLA the go-to exhaust for off-road racers all over the world. Shop Borla Now


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