Need help with a tuning kit, how do you tune your scooter, which kit should I choose, and all general tuning and modifcations questions are for in here.
Hi an looking at buying a Rapido from AF probably gonna run it with a Ron Moss piston, there are two cylinder heads on the site one is 9.5:1 ratio and the other is 8:1 can someone help me understand the difference between the two Ratio? thanks Lammer205