Tracklist
| A1 | I Thought U Knew | 3:17 |
| A2 | I Thought U Knew (Dub) | 3:02 |
| B1 | Supa Badd! | 5:01 |
| B2 | Supa Badd! (Dub) | 5:01 |
Credits
- Engineer – Bob Ross, Danny Kopelson, Dave Luke*
- Producer – The Wild Boyz
Other versions
| Category | Artist | Title (Format) | Label | Category | Country | Year |
|---|---|---|---|---|---|---|
| V-1606 | The Wild Boyz | I Thought U Knew (12", Promo) | Volt | V-1606 | US | 1989 |
