49cc FACT

49cc FACT

I have always run with 87 grade gas in my pocket bike because I am cheep ass when it comes to spending money. FACT after putting in 91 octane I gained from 5 to 10 mph more in top speed. I weight about 180 lbs was able to take my X7 about 35mph. Normally, I can run it about 25 mph. Felt like it could go faster but I would need to change the gear ratios to increase the top speed.