ingridemma

I came for some help but stayed for the comments.

Great puzzle! I can tell you from experience that an ENDO is the exact opposite of a front wheelie. Originally short for end over end, you endo when you lock up your front wheel and the rear wheel flies up. The cool tricksters do it intentionally and land it back down. For me, it's up and over the bars and into the dirt (or tree!).

TIL that I share my name with a crossword creating app. Now I might have to try my hand at puzzlemaking!

Can’t we just clue SIERRAS as unnecessary pluralization of an already plural term?