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aFe Power Air Intake Systems, Exhaust Systems, Headers, Intercoolers, Turbochargers, Programmers, Torque Converters and more

Advanced FLOW Engineering (aFe Power) is a premier designer and manufacturer of automotive performance upgrade systems and components. Current product lines include cold air intake systems, high performance direct fit and racing air filters, exhaust systems, headers, intercoolers, turbochargers, electronic programmers, diesel fuel systems, torque converters, throttle body spacers, and more. aFe is passionate about providing the most compelling, innovative, and highest performing products that are designed, built, and tested in the USA. aFe was founded in 1999 and has headquarters and manufacturing facilities in Corona, California, USA. Accesspeed has been supplying aFe products to our customers since we opened our doors, and we are proud to offer the wide selection of aFe Power parts and accessories.

Exhaust, Mufflers, Headers and Tips » Cat-Back Exhaust

Cat-Back Exhaust Systems

What is a cat back exhaust system?

A Cat-back exhaust is the section of the exhaust system that runs from the outlet of the catalytic converter to the exhaust tips. Cat-back exhaust systems can improve horsepower and fuel economy, as well as changing the exhaust sound to something more aggressive, and often includes all pipes from the catalytic converter to the tips, including mufflers and/or resonators.

Is a cat-back exhaust legal?

Yes. Cat-back exhaust systems are legal, as they are installed behind the catalytic converter (hence, cat-back) and do not modify or remove emissions components. Additionally, cat-back exhaust systems are Federally protected under the Magnuson-Moss Warranty Act, and will not void your factory warranty.

aFe 49-08043 Scorpion 2.5" Hi-Tuck Cat-Back Aluminized Exhaust 2007-2018 Jeep Wrangler JK 2-Door / aFe Power 49-08043 Cat-Back Exhaust

aFe 49-08043 Scorpion 2.5" Hi-Tuck Cat-Back Aluminized Exhaust 2007-2018 Jeep Wrangler JK 2-Door

Part# AFE-49-08043
$533.96 $460.40

aFe 49-14001 Large Bore-HD 4" 409 Stainless Cat-Back Exhaust 2001-2005 Silverado/Sierra 6.6 LB7/LLY / aFe Power 49-14001 Cat-Back Exhaust

aFe 49-14001 Large Bore-HD 4" 409 Stainless Cat-Back Exhaust 2001-2005 Silverado/Sierra 6.6 LB7/LLY

Part# AFE-49-14001
$681.96 $588.47

aFe 49-14002 LARGE Bore HD 4" Cat-Back Stainless Exhaust 2006-2007 Silverado/Sierra 6.6 LLY/LBZ / aFe Power 49-14002 Cat-Back Exhaust

aFe 49-14002 LARGE Bore HD 4" Cat-Back Stainless Exhaust 2006-2007 Silverado/Sierra 6.6 LLY/LBZ

Part# AFE-49-14002
$681.96 $588.47

aFe 49-36138-B Takeda Stainless 2.5-inch Cat-Back Exhaust with Black Tips for 2023-up Nissan Z / aFe 49-36138-B Takeda Stainless 2.5-inch Cat-Back

aFe 49-36138-B Takeda Stainless 2.5-inch Cat-Back Exhaust with Black Tips for 2023-up Nissan Z

Part# AFE-49-36138-B
$1,999.96 $1,566.51

aFe 49-36138-C Takeda Stainless 2.5" Cat-Back Exhaust with Carbon Fiber Tips for 2023-up Nissan Z / aFe 49-36138-C Takeda Stainless 2.5-inch Cat-Back

aFe 49-36138-C Takeda Stainless 2.5" Cat-Back Exhaust with Carbon Fiber Tips for 2023-up Nissan Z

Part# AFE-49-36138-C
$1,999.96 $1,566.51

aFe 49-36138-L Takeda Stainless 2.5-inch Cat-Back Exhaust with Blue Flame Tips for 2023-up Nissan Z / aFe 49-36138-L Takeda Stainless 2.5-inch Cat-Back

aFe 49-36138-L Takeda Stainless 2.5-inch Cat-Back Exhaust with Blue Flame Tips for 2023-up Nissan Z

Part# AFE-49-36138-L
$1,999.96 $1,566.51

aFe 49-36138-P Takeda Stainless 2.5-inch Cat-Back Exhaust with Polished Tips for 2023-up Nissan Z / aFe 49-36138-P Takeda Stainless 2.5-inch Cat-Back

aFe 49-36138-P Takeda Stainless 2.5-inch Cat-Back Exhaust with Polished Tips for 2023-up Nissan Z

Part# AFE-49-36138-P
$1,999.96 $1,566.51

aFe 49-42002 Large Bore-HD 4" 409 Stainless Steel Cat-Back Exhaust 2004.5-2007 Dodge Ram 5.9L Diesel / aFe Power 49-42002 Cat-Back Exhaust

aFe 49-42002 Large Bore-HD 4" 409 Stainless Steel Cat-Back Exhaust 2004.5-2007 Dodge Ram 5.9L Diesel

Part# AFE-49-42002
$681.96 $588.47

aFe 49-42005 Large Bore-HD 4" 409 Stainless Steel Cat-Back Exhaust 2003-2004 Dodge Ram 5.9L Diesel / aFe Power 49-42005 Cat-Back Exhaust

aFe 49-42005 Large Bore-HD 4" 409 Stainless Steel Cat-Back Exhaust 2003-2004 Dodge Ram 5.9L Diesel

Part# AFE-49-42005
$750.96 $648.80

aFe 49-43003 Large Bore-HD 4" 409 Stainless Steel Cat-Back Exhaust 2003-2007 Ford Truck 6.0 Diesel / aFe Power 49-43003 Cat-Back Exhaust

aFe 49-43003 Large Bore-HD 4" 409 Stainless Steel Cat-Back Exhaust 2003-2007 Ford Truck 6.0 Diesel

Part# AFE-49-43003
$825.96 $715.48

aFe 49-43009 Large Bore-HD 4" 409 Stainless Steel Cat-Back Exhaust 2003-2005 Ford Excursion 6.0L / aFe Power 49-43009 Cat-Back Exhaust

aFe 49-43009 Large Bore-HD 4" 409 Stainless Steel Cat-Back Exhaust 2003-2005 Ford Excursion 6.0L

Part# AFE-49-43009
$825.96 $702.88

aFe 49-43068-B MACH Force-Xp 3"-3.5" Stainless Cat-Back Exhaust System 2015-2020 F150 Ecoboost / aFe Power 49-43068-B Cat-Back Exhaust

aFe 49-43068-B MACH Force-Xp 3"-3.5" Stainless Cat-Back Exhaust System 2015-2020 F150 Ecoboost

Part# AFE-49-43068-B
$906.96 $787.60

aFe 49-43078-B Rebel Series 3" to 2-1/2" 409 Stainless Cat-Back Exhaust 2011-2014 F150 Ecoboost 3.5 / aFe Power 49-43078-B -- 15HP Gain!

aFe 49-43078-B Rebel Series 3" to 2-1/2" 409 Stainless Cat-Back Exhaust 2011-2014 F150 Ecoboost 3.5

Part# AFE-49-43078-B
$1,297.96 $969.90

aFe 49-43081-B Rebel Series 3" to 2-1/2" 409 Stainless Cat-Back Exhaust 2015-2020 F150 2.7/3.5/5.0 / aFe Power 49-43081-B Cat-Back Exhaust

aFe 49-43081-B Rebel Series 3" to 2-1/2" 409 Stainless Cat-Back Exhaust 2015-2020 F150 2.7/3.5/5.0

Part# AFE-49-43081-B
$1,097.96 $958.91

aFe 49-46021-B MACH Force-XP 2.5" Stainless Cat-Back Exhaust W/Black Tip 2013-2015 Tacoma 4.0 / aFe Power 49-46021-B Cat-Back Exhaust

aFe 49-46021-B MACH Force-XP 2.5" Stainless Cat-Back Exhaust W/Black Tip 2013-2015 Tacoma 4.0

Part# AFE-49-46021-B
$825.96 $715.02

aFe 49-46021-P MACH Force-Xp 2-1/2" Stainless Cat-Back Exhaust W/Polished Tips 2013-2015 Tacoma 4.0 / aFe Power 49-46021-P Cat-Back Exhaust

aFe 49-46021-P MACH Force-Xp 2-1/2" Stainless Cat-Back Exhaust W/Polished Tips 2013-2015 Tacoma 4.0

Part# AFE-49-46021-P
$750.96 $648.01

aFe 49-46029-B MACH Force-Xp Stainless Cat-Back Exhaust, Black Split Exit Tips, 2007-2014 FJ Cruiser / aFe 49-46029-B Rebel Series Stainless Cat-Back

aFe 49-46029-B MACH Force-Xp Stainless Cat-Back Exhaust, Black Split Exit Tips, 2007-2014 FJ Cruiser

Part# AFE-49-46029-B
$1,529.64

aFe 49-46030-B Rebel Series Stainless Cat-Back Exhaust, Black Dual Tips, 2007-2014 FJ Cruiser / aFe 49-46030-B Rebel Series Stainless Cat-Back

aFe 49-46030-B Rebel Series Stainless Cat-Back Exhaust, Black Dual Tips, 2007-2014 FJ Cruiser

Part# AFE-49-46030-B
$1,035.72

aFe 49-46030-P Rebel Series Stainless Cat-Back Exhaust, Polished Dual Tips, 2007-2014 FJ Cruiser / aFe 49-46030-P Rebel Series Stainless Cat-Back

aFe 49-46030-P Rebel Series Stainless Cat-Back Exhaust, Polished Dual Tips, 2007-2014 FJ Cruiser

Part# AFE-49-46030-P
$948.96 $938.70

aFe 49-46110-P Stainless Steel Cat-Back Exhaust System With Polished Tip 2005-2015 Nissan Xterra 4.0 / aFe 49-46110-P Stainless Steel Cat-Back Exhaust

aFe 49-46110-P Stainless Steel Cat-Back Exhaust System With Polished Tip 2005-2015 Nissan Xterra 4.0

Part# AFE-49-46110-P
$999.96 $870.00

aFe 49-46111 Stainless Steel Cat-Back Exhaust System for 2005-2015 Nissan Xterra 4.0L / aFe 49-46111 Stainless Steel Cat-Back Exhaust

aFe 49-46111 Stainless Steel Cat-Back Exhaust System for 2005-2015 Nissan Xterra 4.0L

Part# AFE-49-46111
$849.96 $691.32

aFe 49-46201 MACH Force-Xp 3" 409 Stainless Steel Cat-Back Exhaust 2007-2011 Jeep Wrangler 4-Dr 3.8L / aFe Power 49-46201 Cat-Back Exhaust

aFe 49-46201 MACH Force-Xp 3" 409 Stainless Steel Cat-Back Exhaust 2007-2011 Jeep Wrangler 4-Dr 3.8L

Part# AFE-49-46201
$750.96 $648.80

aFe Power 49-03041-B ATLAS 4-in Aluminized Cat-Back With Black Tip 2011-2014 Ford F-150 3.5 EcoBoost / aFe Power 49-03041-B Cat-Back Exhaust

aFe Power 49-03041-B ATLAS 4-in Aluminized Cat-Back With Black Tip 2011-2014 Ford F-150 3.5 EcoBoost

Part# AFE-49-03041-B
$889.96 $674.30

aFe Power 49-03041NM ATLAS 4-in Aluminized Cat-Back - No Tip- Ford F-150 2011-2014 3.5 EcoBoost / aFe Power 49-03041NM Cat-Back Exhaust

aFe Power 49-03041NM ATLAS 4-in Aluminized Cat-Back - No Tip- Ford F-150 2011-2014 3.5 EcoBoost

Part# AFE-49-03041NM
$699.96 $554.40

aFe Power 49-03041-P ATLAS 4-in Aluminized Cat-Back w/Polished Tip 2011-2014 Ford F-150 3.5 EcoBoost / aFe Power 49-03041-P Cat-Back Exhaust

aFe Power 49-03041-P ATLAS 4-in Aluminized Cat-Back w/Polished Tip 2011-2014 Ford F-150 3.5 EcoBoost

Part# AFE-49-03041-P
$681.96 $588.47

aFe Power 49-08042 Scorpion 2.5" Cat-Back Aluminized Exhaust Hi-Tuck 2007-2018 Jeep Wrangler V6 / aFe Power 49-08042 Cat-Back Exhaust

aFe Power 49-08042 Scorpion 2.5" Cat-Back Aluminized Exhaust Hi-Tuck 2007-2018 Jeep Wrangler V6

Part# AFE-49-08042
$533.96 $460.40

aFe Power 49-43038-B MACH Force XP Cat-Back Exhaust With Black Tip 2011-2014 Ford F-150 3.5 EcoBoost / aFe Power 49-43038-B Cat-Back Exhaust

aFe Power 49-43038-B MACH Force XP Cat-Back Exhaust With Black Tip 2011-2014 Ford F-150 3.5 EcoBoost

Part# AFE-49-43038-B
$997.96 $870.00

aFe Power 49-43038-P MACH Force XP Cat-Back Exhaust W/Polished Tip 2011-2014 Ford F-150 3.5 EcoBoost / aFe Power 49-43038-P Cat-Back Exhaust

aFe Power 49-43038-P MACH Force XP Cat-Back Exhaust W/Polished Tip 2011-2014 Ford F-150 3.5 EcoBoost

Part# AFE-49-43038-P
$906.96 $788.51

aFe Power 49-43041-B MACH Force XP 4" Cat-Back Exhaust W/Black Tip 2011-2014 Ford F-150 3.5 EcoBoost / aFe Power 49-43041-B Cat-Back Exhaust

aFe Power 49-43041-B MACH Force XP 4" Cat-Back Exhaust W/Black Tip 2011-2014 Ford F-150 3.5 EcoBoost

Part# AFE-49-43041-B
$1,297.96 $890.00

aFe Power 49-43041-P MACH Force XP 4" Cat-Back Exhaust W/Polished Tip 2011-2014 Ford F-150 EcoBoost / aFe Power 49-43041-P Cat-Back Exhaust

aFe Power 49-43041-P MACH Force XP 4" Cat-Back Exhaust W/Polished Tip 2011-2014 Ford F-150 EcoBoost

Part# AFE-49-43041-P
$906.96 $787.60

aFe Power 49-43069-B MACH Force-Xp 4" Stainless Cat-Back Exhaust System 2015-2020 F150 Ecoboost / aFe Power 49-43069-B Cat-Back Exhaust

aFe Power 49-43069-B MACH Force-Xp 4" Stainless Cat-Back Exhaust System 2015-2020 F150 Ecoboost

Part# AFE-49-43069-B
$997.96 $870.00

aFe Power 49-43070-B MACH Force-Xp 3" 409 Stainless Cat-Back Exhaust System 2015-2020 F150 Ecoboost / aFe Power 49-43070-B -- 13-HP Gain!

aFe Power 49-43070-B MACH Force-Xp 3" 409 Stainless Cat-Back Exhaust System 2015-2020 F150 Ecoboost

Part# AFE-49-43070-B
$1,460.96 $1,284.90

aFe Power 49-44001 Large Bore-HD 4" 409 Stainless Steel Cat-Back Exhaust 2001-2005 GM 6.6 LB7/LLY / aFe Power 49-44001 Cat-Back Exhaust

aFe Power 49-44001 Large Bore-HD 4" 409 Stainless Steel Cat-Back Exhaust 2001-2005 GM 6.6 LB7/LLY

Part# AFE-49-44001
$825.96 $715.02

aFe Power 49-44002 Large Bore-HD 4" 409 Stainless Steel Cat-Back Exhaust 2006-2007 GM 6.6 Duramax / aFe Power 49-44002 DPF-Back Exhaust

aFe Power 49-44002 Large Bore-HD 4" 409 Stainless Steel Cat-Back Exhaust 2006-2007 GM 6.6 Duramax

Part# AFE-49-44002
$825.96 $715.02

aFe Power 49-46001-1B MACH Force-Xp 3" 409 Stainless Steel Cat-Back Exhaust 2005-2012 Tacoma 4.0 / aFe Power 49-46001-1B -- 26 HP Gain

aFe Power 49-46001-1B MACH Force-Xp 3" 409 Stainless Steel Cat-Back Exhaust 2005-2012 Tacoma 4.0

Part# AFE-49-46001-1B
$931.96 $788.51

aFe Power 49-46001-1P MACH Force-Xp 3" 409 Stainless Steel Cat-Back Exhaust 2005-2012 Tacoma 4.0 / aFe Power 49-46001-1P -- 26 HP Gain

aFe Power 49-46001-1P MACH Force-Xp 3" 409 Stainless Steel Cat-Back Exhaust 2005-2012 Tacoma 4.0

Part# AFE-49-46001-1P
$825.96 $715.02

aFe Power 49-46003-1B MACH Force-Xp 3" Stainless Steel Cat-Back Exhaust 2007-2014 Toyota FJ Cruiser / aFe Power 49-46003-1B Cat-Back Exhaust

aFe Power 49-46003-1B MACH Force-Xp 3" Stainless Steel Cat-Back Exhaust 2007-2014 Toyota FJ Cruiser

Part# AFE-49-46003-1B
$938.70

aFe Power 49-46003-1P MACH Force-Xp 3" Stainless Steel Cat-Back Exhaust 2007-2014 Toyota FJ Cruiser / aFe Power 49-46003-1P Cat-Back Exhaust

aFe Power 49-46003-1P MACH Force-Xp 3" Stainless Steel Cat-Back Exhaust 2007-2014 Toyota FJ Cruiser

Part# AFE-49-46003-1P
$851.76

aFe Power 49-46022-B MACH Force-Xp 3" Stainless Cat-Back Exhaust W/Black Tip 2013-2015 Tacoma 4.0 / aFe Power 49-46022-B Cat-Back Exhaust

aFe Power 49-46022-B MACH Force-Xp 3" Stainless Cat-Back Exhaust W/Black Tip 2013-2015 Tacoma 4.0

Part# AFE-49-46022-B
$906.96 $787.60

aFe Power 49-46022-P MACH Force-Xp 3" Stainless Cat-Back Exhaust W/Polished Tip 2013-2015 Tacoma 4.0 / aFe Power 49-46022-P Cat-Back Exhaust

aFe Power 49-46022-P MACH Force-Xp 3" Stainless Cat-Back Exhaust W/Polished Tip 2013-2015 Tacoma 4.0

Part# AFE-49-46022-P
$825.96 $715.02