Micro Max Update Kit
Turn your Rotax Junior or Senior into a Micro Max. With this kit your kid can race with the same rotax engine from the age of 7 and up. The micro Max class is from ages 7 to 10. The next class is the Mini Max which is ages 9-12. You then just use the parts from your Jr. Kit and update the restrictor. At age 13-16 you just pull out the restrictor and jump into the Junior class.