Need advice on my MX

[Extremedirt]

Hello, I've got an Aprilia RX 50, the crankshaft is made for 13000 rpm, untuned it runs at about 9000rpm (correct me if i'm wrong).
I've modifed an K&N Power Air Filter , And an Giannelli Exhuast, It now runs at 11000 rpm.
Should i consider getting an more powerful crankshaft that can take 16000rpm?

Thanks.

 

[zig06]

How do you know what RPM your hitting?

Please tell me your not pinning it in the garage with a tach tied to it.... :yikes:

As long as you are not exceeding the stated RPM of the crank that you have, your good to go.