To unlock new, exclusive gear in the shop, perform the following tasks:
"Super Hang-On" Gear Complete all of Jet, Wave and Storm's Missions
"Hang-On" Gear Complete all of Jet, Wave and Storm's Missions
"Opa Opa" Gear Complete all of Jet, Wave and Storm's Missions
"The Crazy" Gear Complete all of Jet, Wave and Storm's Missions