Flowmaster is a leading manufacturer of:

  • Performance Exhaust Systems
  • Exhaust Kits
  • Mufflers, Racing Mufflers, Stainless Steel Mufflers
  • Exhaust Tips
  • Exhaust Accessories
  • Hi-Flow Catalytic Converters and
  • Exhaust Headers

for cars, muscle cars, pick-up trucks, diesel trucks, SUV’s, and most vehicles.

Flowmaster exhaust systems and mufflers come with that distinctive “Flowmaster® sound” available in mild, moderate and aggressive tones.


This series is one of Flowmaster’s most aggressive exterior sounding mufflers!

The sound is so aggressive that they don’t recommend them for use on street driven vehicles. Best suited for  racing applications.

These mufflers utilize the same patented Delta Flow performance technology used in their highly popular Super 40 and Super 44 series mufflers.

  • The most aggressive muffler Flowmaster offers
  • Recommended for racing applications
  • Single muffler utilized patented Delta Flow Technology
  • Available in 409S Stainless Steel
  • Backed by lifetime warranty
  • Compact size – will fit anywhere!

JUST RELEASED JUNE 1, 20148425154

P/N 8425154
Universal fit, (Off highway use)
2.50″ In/Out

Outlaw Series817690
Exhaust Systems/Kits

Also  Flowmaster’s most loudest and meanest aggressive race-oriented exhaust system!

If you desire the ultimate in aggressive sounding performance, an Outlaw Series exhaust system could be right for you. These systems/kits feature race-bred components that ensure minimal restriction and only slight reduction on sound over open exhaust tubing on non-catalytic converter-equipped vehicles. With new vehicles featuring catalytic converters, Outlaw Systems can be compatible with regular street driving.

They also feature:

  • Super 10 series muffler,
  • 409 Stainless Steel,
  • 3″dual tailpipes, and
  • Killer 4″ black ceramic finished tips that are sure to turn heads.

Following are Outlaw Truck Applications:

P/N 817689 (14 Chevy/GMC 1500 5.3L V8 crew cab & double cab)

P/N 817688 ( 09-13 Chevy/GMC 1500 5.3L V8 crew cab & double (EX) cab)

P/N 817690 (‘09 -’14 Dodge Ram 1500 4.7L, 5.7L V8, std. cab/8’ bed, crew cab/5’7” bed, quad cab/6’4” bed)

P/N 817705 (06 -08 Dodge Ram 1500 5.7L V8, std. cab/6’ bed, std. cab/8’ bed, crew cab/6’ bed, NOT mega cab)

P/N 817691 (09 -14 Ford F-150, 4.6L, 5.0L, 5.4L V8, all wheel bases)

P/N 817696 (04 -08 Ford F-150, 4.6L, 5.4L V8, all wheel bases)

P/N 817692 (09 -14 Toyota Tundra 4.6L, 5.7L V8, 145” wheel base)

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