sadly no. there are no aftermarket parts aside from carb, intake, exhaust. you're in the same boat as Predators and other clones in that size but the good news is you can definately supe it up yourself with a little work. Some Honda valve train parts can fit or engine made to accept in the way of valves, springs & rockers. I'd start with looking at GX100 parts and try to get measurements/specs on them before buying. At the point you'd spend $200 on engine upgrades you'd probably be farther ahead to go with a bigger engine or downsize to a high revving 49cc which is lighter and actually has a higher top speed than a 79