sporket size ?

[D12]

hey i just wanna know if its a good idea to put a 16tooth spoket on my 400ex.. it is bone stock.

i like to high speed... what will be the change ? i run a 15 tooth actually, thank you

[JOEX]

With the 16 you'll gain a few mph at the top end with the sacrifice of low end torque.

[cals400ex]

my stock bike ran a bit quicker drag racing with it on. you just won't want it for trails or where the best low end power is needed.