Yamaha Jog RR LC Tuning help

I was basically wanting to get my bike faster and below is the current setup:

.Yasuni Pipe
http://www.donotlink-pedstop.co.uk/p/Yasuni_exhaust_Z_for_Yamaha_Aerox_MBK_Nitro_–_Carbon_silencer-2852.aspx

.Derestricted in the variator.
.New lighter rollers
.New jets

So basically I am looking to get my bike going faster, its currently hitting 50-55 MPH and i would like to get it up to around 60-70 area (or more...)

Any suggestions would be much appreciated.