Hey,
I'm new to BMX-ing and I have a rather large sprocket on my Haro Bmx.
My friends said its a problem because you catch it when grinding if its too big. They all have really small sprockets. However, I wish to change to a 25/9 (sprocket/driver), but not all drivers fit all hubs. I have a threaded freewheel and its a Haro Bmx. What 9t drivers will fit it? I'm low on money and aim to spend up to £20. Does anyone know a driver that will fit or will I need a new hub or a cassette?
Thanks,
Greg.

