This is the bike?

I personally wouldn't take this above 30 because of the weak and somewhat bendy frame. Very likely to be dangerous at high speed. Folding mechanisms are famous for issues. You want dual suspension anyway after 30-35mph.
If you want to go fast, a beefy mountain bike is the way to go.

I personally wouldn't take this above 30 because of the weak and somewhat bendy frame. Very likely to be dangerous at high speed. Folding mechanisms are famous for issues. You want dual suspension anyway after 30-35mph.
If you want to go fast, a beefy mountain bike is the way to go.
