hi my two daughters aged 9/11 have run these cars for over a year now and anyone who has seen them race will know they are virtually bullet proof
the only issue we have had were the front shock towers, which broke easily. this was solved by using a brace across the top of the tower.
the standard speedo is only good for sealed can motors (we run 20t in ours).
don't expect to make the next 'A' final with it and accept the level it is aimed at and you won't be disapointed.