The 636Z-31B Bob Cat features a stepped header design (1 3/4″ to 1 7/8″ to 2″). As a result, exhaust flow improves and throttle response feels quicker. In addition, the 2 1/4″ collector allows the muffler to slide securely onto the header.
The wrapped perforated baffle supports 96″–113″ M8 engines. Because of this, you get a strong torque curve and a powerful tone without sacrificing rideability.
Each system comes ready to install. For example, you get heat shields, exhaust gaskets, mounting hardware, and baffles. Plus, it includes both 18mm and 12mm O2 bungs. So, you can easily run an auto-tune module like ThunderMax.
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Street Bob
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Low Rider
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Slim
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Fat Bob
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Deluxe
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Sport Glide
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Heritage Classic
Fitment catalogs are auto generated and are for reference only. Please look closely at pictures and decide condition and fitment for yourself.