Review on 🛵 FLYPIG GY6 49cc 50cc Scooter Moped Kick Start Gear Shaft Idle Gear - Compatible with 139QMA 139QMB Engine by Mark Gilbert

I installed a large diameter 72cc kit. See, much more compression, uses the original head. My kickstarter was a bit worn except for the large bore kit. I've learned that with a kickstarter, the best technique is to place your foot on the kickstarter, push it all the way down, and then with a quick push, push the kickstarter all the way down to start the scooter. If you pull out the kickstarter lever and just push in, there's a much better chance of removing the kickstarter gears. Even with the hub, there is play in the kickstarter shaft. I am very happy with this replacement.