V twin 200 prototype by Hustler mini bikes.

[Lizardking]

https://www.instagram.com/reel/DEWqg4WJ-oV/?igsh=MzRlODBiNWFlZA==

Turn up the sound and have a listen.

 

[DaddyJohn]

Check this one out for one better. Great channel with lots of engine mod variations… He generally keeps the transmissions as well.