Jackson Kids -- Daddy's BAD ASS Motorcycle Memorial

6/21/2011 11:56 AM PDT BY TMZ STAFF
The Jackson kids recently got a glimpse of the coolest Michael Jackson memorial yet -- in the form of a SICK custom-painted motorcycle ... depicting the King of Pop at various stages in his career.

Paris Jackson tweeted the photos over the weekend -- and the timing couldn't be more perfect ... because this Saturday marks the two-year anniversary of their father's death.