How do you unlock the chaos emerald gear in sonic riders zero gravity?

Related Questions

• Is there chaos emerald gear on sonic riders zero gravity?
   - Complete the indicated task to unlock the corresponding gear. Chaos Emerald gear: Earn an "Extreme" rank on ...
• How do you get a chaos emerald in sonic heroes?
   - You have to have the key at the end of the level. This only works on the even level stages. The odd level ...
• How can I get the last chaos emerald in Sonic Advance?
   - That is the hardest one to get, and even expert Sonic players get nightmares about that one. You just gotta ...
• How do you breed Chaos in Sonic Adventure 2 Battle?
   - When Chaos are old enough (around two years or so) they can breed if given a heart fruit, or are just ...
• When you collected all the chaos emeralds how do you get super sonic in sonic rush?
   - Defeat the final boss, then if you have collected all emeralds, the REAL final boss opens up and you play as ...