Oh no I've made many adjustments first it has a polini race variator with 7g rollers a 72cc malossi stage6 piston and barrel with high compression head, a malossi torsion controller and spring, a Leo vince tt custom made race pipe, kevlar drive belt pm tuning racing clutch, etc by taking washers out you will only gain 1 or 2 mph u need to rebuild the entire engine to make it do 60+mph
Chris, October 2010