with 90's and smaller I have found that paddles are not needed. The kids and the bike are so light that if you drop tires to about 2 lbs the tend to work fine. Only time I think that paddles might be needed on bikes that size is if your child is really agressive

 

Are you sure your 90 was doing 40+? My 150 only does around 35mph. You had to of cut the
pink wire too and put the throttle out all the way to go 40mph.

 

And taken out the snorkel. Not arguing just dont know if a 90 would go that fast w/out all the
restrictive stuff taken out.