BOB'S MUFFLER MANDREL BENT EXHAUST PIPES

DIESEL PERFORMANCE EXHAUST
Bob's Muffler Mandrel Bent Power Systems

INFORMATION 
“An educated consumer is our best customer.” Therefore, it is important to provide enough facts for you to make an educated decision.  At Bob's Muffler we pride ourselves on providing you with the best technology available, giving you the most out of your Ford, Chevy or Dodge diesel truck.

PIPES & POWER
Pipes are critical to high performance.  Bob's Muffler offers mandrel bends for better flow versus stock.  All-aluminized or stainless materials gives them a longer lasting sharper appearance.  Our custom made tooling allows us to produce a product that will give you the most power possible.

MANDREL BENDING
The improved flow that comes from a mandrel bent pipe makes Bob's Muffler pipes, and systems superior.  The mandrel bending process maintains a constant inside diameter, even through pipe bends.  Flow area remains consistent, increasing flow more than 35% compared to stock, serrated bent pipes.

DIESEL EXHAUST
With an internal combustion gas motor there is a point of diminishing return on pipe size.  With a diesel motor, bigger is better.  Bob's Muffler mandrel bent 4" exhaust systems will give you wide open performance for the most power possible,
and improved fuel economy, horsepower, torque, and lower exhaust temperatures up to 20%.

DIESEL MUFFLERS  
Our Diesel mufflers are a straight-through design.  Straight-through with no restrictions. No restrictions equals better flow, and better flow equals more horsepower.  It doesn't get any better than this!

BOB'S MUFFLER SYSTEMS VS PRE-BENT KITS
Why buy one of those expensive kits that are chopped up so they will fit in a box, when you can buy a custom bent system from Bob's Muffler that will give you superior performance. 
We are one of the only muffler shops in the United States that can mandrel bend your diesel system, our competition has no choice but to sell you an expensive kit.  Here is one example why our systems are superior: If you have a catalytic converter on your truck you will have either a 3" or 31/2" connection on the inlet and outlet of the converter.  Those pre-bent kits are designed to bolt on to your existing converter, that means that your 4" system will have only 3" or 31/2" flow instead of 4".  Bob's Muffler will custom fabricate your converter and your system so it will have a 4" inlet and outlet.  Bob's Muffler systems will give you true 4" flow from start to finish to give you the most power possible.

WARRANTY
All 4" systems come with a Lifetime parts and labor warranty (call store for details).  Bob's Muffler uses only the highest quality parts available, give us a call.

  
 
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4" Stainless system
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Custom fabricated converter
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