KR: KITT to Attack Mode 

[ This video has been horizontally flipped to prevent it from being blocked. ]
From: A Knight in Shining Armor
From the first regular episode of the series, KITT demonstrates new capabilities, transforming into a radical Attack Mode.
The series saw the subtle ripple/morph transformations replaced with large panel shifting, sort of like the live-action Transformers movie.
This particular example is probably not one of their best, as the CGI doesn't appear completely realistic.