Crosswordiee.com

% replaces any number of letters (la% - lake, lamp)_ replaces one letter (ca_ - car, cat)

Crossword clues for Harley, for one 4 letters:

BIKE: Harley, for one
REV: Show off on one's Harley
CYCLE: Harley, for one
REV: Show off one's Harley, in a way