My 2020 Boom Vader lost 4th gear today

[PlagueOfFear]

Originally Posted by 4T_Goblin

No worries, hope this info helps. Don't forget to inspect your clutch mechanism at the handle bars and case. As for gaskets, those can also be found on the same places. Generally the gray gaskets are for 125cc and under. Green gaskets are for yx140. Make sure to pick up a couple sets in case one rips.

Do you think this one will work? https://www.amazon.com/dp/B075N59Q2L I ordered it because it has faster shipping so it'll be here tomorrow instead of next week. The gaskets came today and I have already dropped the engine but I haven't opened it up yet bc my flywheel puller isn't the right size so I'll have that here tomorrow as well.

[4T_Goblin]

Take the old one out and inspect it. That specific one in the link looks like it could work, but i can't tell from the photos alone.
Motion pro fly wheel puller is the way to go