I am looking for some 3 pc cranks for my Haro Master. I like the Redline flight cranks but they say that they are considered race cranks not freestyle. What's the difference and does it really matter?

I run Flights on my Haro, and love them - I only ride street and ramp, and have found these and Profiles to be more than adequate - I've known people to bend both single and 3 piece, race and freestyle, so I'm not sure which is best for which - I love the Flights though - I can only afford the modern day version for every day riding, but they're awesome

No difference - BITD cranks were cranks - not specific for BMX racing or Freestyle - BOTH.