D&D 4 inch 2-into-1 Tip Compatible Billet Cat Exhaust for '17-Up M8 Harley Davidson Touring Models [NOT FOR '23-24 CVO MODELS]
Please call for availability.
- Give your Milwaukee Eight the opportunity to build big horsepower and torque by installing a D&D 2 into 1 exhaust system. The name Billet CAT comes from the four custom billet end caps that you have your choice of in chrome or black. And like it's predecessor the D&D Fat Cat exhaust, the Billet Cat delivers great sound and power for your 2017-up Harley-Davidson FL model.
- All D&D 2 into 1 exhaust systems for Harley-Davidson Touring models are available in brilliant chrome or high-temperature black powder coat finish. The pipe itself is sold without a tip. Select the D&D billet tip style of your choice, such as the 30° Cap, Fish Mouth Cap, Straight Cap, or the Race Cap from the drop down menu. (Caps add to the price)
- If you wish to retain that dual exhaust look, select a Ghost Pipe to balance the look of your bike with a matching billet end cap.
- Take a close look at a D&D exhaust system and you’ll find true craftsmanship. From the hand ported inlets and collectors, hand fit heat shields with machined and welded steel clamp brackets, heavy duty mounting supports and ready for show finishes, you’ll know you made the right choice for your 2017 to present Milwaukee Eight Harley Davidson Touring Model.
- New 2:1 System for the Milwaukee - Eight Engine.
- This system is designed especially for the M8 motors.
- The M8 Billet Cat full system is equipped with heat-shields, exhaust gaskets, bolt kit and baffle.
- Our systems a designed to increase low-end torque and horsepower.
- M8 Billet Cat comes with 18mm 02 bungs with a 12mm insert for the 12mm sensors.
This D&D Exhaust system comes with the choice of two different baffles: Vortex Wrapped Baffle or the new Big Bore Baffle:
- 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.
- Will NOT fit with the Harley Cool Flow Fan.
- Bluing and Discoloration are caused by improper tuning and will not be covered under Warranty.
- D&D Performance Exhaust Systems are designed for closed course racing applications.
- Not for use on pollution controlled vehicles.
Made in the U.S.A.
DISCLAIMER: Not legal for sale or use in California on any pollution controlled motor vehicles.
Note: The use of a fuel processor is highly recommended when installing this exhaust system. Click here for Fuel Management Systems or call 570-992-1113 to speak to a West End Motorsports representative for assistance.
![]() |