My son needs a lower gear to keep him slowed downed for drivers training.
Current setup is a 14/37
Throttle is set so low it powers out on gentle uphills on the lawn, but on gentle downhills on the driveway it will still go 10 or 12 mph.
Are 10 or 11 tooth sprokets available? or say a 12/45 sprocket chain set. (hopefully O ring)
Looks to be a #420 chain (definitely way smaller then my #520 on my sportsman).

Also has anyone tried tubes in the tires so they could be aired down to 3 or 4 psi?

Thanks
Ken