- Allows the use of exhaust systems with 18 mm O2 sensor bungs to be used with late model bikes with 12 mm O2 sensors
- Reduces the 18 mm O2 bungs to 12 mm O2 bungs found on select '10-'15 models
- Wiring harness comes pre-assembled with connector pins
- Made in the U.S.A.
- Allows the use of '09 dresser exhaust pipes on '10 dresser models & '12 FXST & FXD Models. (Includes bung reducers, installed terminals without connectors)