pushed into onto the original plug, and held in position with an “O” ring.
The plug head is covered and unattractive rusty plugs are given a new shine and a better protected from dirt. Machined from billet aluminium and anodised silver. Sold as a single item.
- Definitely not a "must have" item - but it looks so good on the side of the bike covering the ratty looking transmission fill hole! Cleans things up too.