Sold as singles or choose quantity 2 for twin cylinders.
These are required when deciding to remove your stock 18mm O2 sensors. This would be in a situation where Rottweiler Performance Fueling Dongles or a Powercommander V is being used and the stock narrow band O2's have been rendered unused. Mild Steel is our most economical choice to get the job done but has a tendency to rust. If that’s a concern than our Stainless Steel or Titanium bungs are a better option.
Bikes that use 18mm O2 plugs: