Aerox tuning

I've got a 2012 aerox with a de restricted but standard exhaust. I am planning on putting a polini variator with a new Kevlar belt on, do I need to upjet for this set up or is it not needed?

 

no you don't, if you fit a new exhaust however you do need to upjet a little.

 

Ok cheers

 

I've fitted the polini high speed variator and it's all running nicely but acceleration could do with being better, I'm running 6.8g rollers ATM has anyone got any ideas on what to use