650Z-32T D&D Billet Cat Exhaust 2-into-1 Chrome for 2017-Newer M8 Harley FLH/FLT Touring Models



Starting July 1st, 2022 D&D will be passing on a 10% surcharge to all dealers and customers.  Our price reflects the surcharge.  This surcharge is expected to be temporary and will be removed when manufacturing costs go back down in the future.

The D&D Billet Cat fits 2017-Newer Harley FLH/FLT Touring Models. Select your style of tips and baffle option from the drop down menu below. A matching ghost pipe can be purchased for those who have wrapped bags or like the true dual look.



650Z-32T D&D Billet Cat Exhaust 2-into-1 Chrome for 2017-Newer Harley FLH/FLT Touring Models

This D&D Billet Cat Exhaust will get you some sound from your M8 motorcycle. Check out this sound clip we did after installing it on our 2017 Road Glide Special:

Will not fit the 2023 CVO Road Glide and Street Glide 121’s with VVT

The D&D Billet Cat Exhaust system is 2 into 1 full exhaust system for 2017-Newer Harley FLH/FLT Touring models.  It is a stepped header system at 1 3/4″-1 7/8″-2 1/8″ at collector and 2 1/2″ where the muffler goes to the header.  This system is one of the top performing exhaust systems available for the Milwaukee 8 engines.  Dummy pipes are available for motorcycles with wrapped bags by selecting it in the drop down menu.  There are several tip options available as well as a couple of choices in baffles.

This D&D Exhaust system comes with the choice of two different baffles: Vortex Wrapped Baffle or the new Big Bore Baffle. Watch our video below to hear the difference:
  • The 2 1/2″ core Vortex Wrapped Baffle works best on stock displacements up to 114″
  • The Big Bore Baffle works best on the bigger displacements on stage 4 114″ and up.

D&D’s Chief Engineer has seen significant increases in mid to high range power on modified engines from stage 4 HD 114 and 117 to aftermarket 120 and up with matching cam and proper tune. The baffle is an all metal perforated 2 1/2 core ( aka big bore baffle) and will be really loud. Since we are a performance-based company, we always give our recommendations based on getting you the best performance, however if you’re willing to sacrifice some performance, you can go with this loud baffle option for the M8 Billet Cat.

The M8 Billet Cat full system is equipped with heat-shields, new exhaust gaskets, bolt kit and baffle.  This system is designed to increase low-end torque and horsepower.  Muffler housing is 4″.  The D&D M8 Billet Cat exhaust comes with both 18mm and 12mm 02 bungs for use with wide band auto tuners such as the Thundermax Auto Tune module or the Dynojet Auto tune.  This exhaust comes with quality Flanges and Gaskets so you do not need to purchase them.

This D&D Billet Cat Exhaust system comes alive once the cam has been upgraded.  The sound is so much deeper and really sounds like a Harley should.  We have may cam upgrade packages available on our website with only the best products available.  We also install camchest upgrades from our show truck at all the events we attend giving our customers instant gratification and stress free cam selection.  This sound clip was done after we did the Tman T216 (475 lift) Cam upgrade.

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