### Clue: Guide American in this place back to base after motorbike racing (9)
### Answer: USHERETTE 
 ### Explanation: Definition: Guide
 US(abbrev. for things American) + HERE(in this, not that, place) + [ **the last letter of**(back to) "base" **placed after**(after) TT(abbrev. for Tourist Trophy, motorbike races held annually on the Isle of Man) ].