Year: 2017-2021

Make: Harley Davidson M8 FL series

2017-2021 Harley Davidson Touring D&D 2:1 M8 Billet Cat is a steeped header system at 1 3/4″-1 7/8″-2 1/8″ at collector -2 1/2″ where the muffler goes to the header.


  • This system is specificity designed for the M8 engine.
  • Powerful results when used with Red Shift M8 cams
  • Expect large increase in low-end torque and horsepower with RS cam.
  • The M8 Billet Cat full system is equipped with heat-shields, exhaust gaskets, bolt kit and baffle.
  • Comes with 18mm 02 bungs with a 12mm insert for the 12mm sensors.
  • Use of Big Bore Baffle can be considered on large displacement engines.
  • Black, no tip


D&D Performance Exhaust Systems are designed for close course racing applications only. Not for use on pollution controlled vehicles.

Weight 51 lbs
Dimensions 47 × 25 × 9 in
Engine Type

Country of Origin