Titanium Nitride (TiN) coatings provide improved ring performance for engines with Nikasil plated cylinders. This gold-colored coating is a relatively soft material that beds well against cylinder walls and helps the piston rings seal up better and faster than uncoated rings.  
 
These are two (2) Wizard Race Shop Titanium Nitride Piston Rings for the Wizard Pro Stock Mercury Racing 2.5 Liter outboards.
 
Not for Steel bores, only works in Standard bore Nikasil Cylinders. Part Number WT2.