Catbacks

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HKS Hi Power Catback Exhaust System (02-06 WRX / STi) - Modern Automotive Performance
Save 18% In Stock
HKS WRX / STi 02+ Carbon-Ti Catback Exhaust
HKS WRX / STi 02+ Carbon-Ti Catback Exhaust
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HKS Full Dual Muffler Catback Exhaust | 2023+ Nissan Z (31014-KN002)
HKS Full Dual Muffler Catback Exhaust | 2023+ Nissan Z (31014-KN002)
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HKS Hi Power Catback Exhaust | 89-94 240SX S13 (32003-KN002)
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HKS Super Turbo Catback Exhaust | 2015-2021 Subaru STI (31029-AF011)
HKS Super Turbo Catback Exhaust | 2015-2021 Subaru STI (31029-AF011)
Save 18% In Stock

A catback exhaust systems replaces all exhaust components behind the factory catalytic converter, hence the name "cat-back". They are the preferred aftermarket exhaust system for people looking for a little more performance and sound that don't want to remove the factory cat converter. Cat backs typically consist of larger diameter piping, high flow resonators, and larger mufflers to provide more exhaust flow, increasing performance.