38mm mikuni tm`s bored to 41mm, Charoit float bowls, vitos power jets. I bought the carbs set up. I think they are .116 0r .118 dumps and mains. when i bought them they didnt have the billet bowls so they are about 2 weeks old. I made two passes down the track on my 10 mil cub with these and it spit the crank out im going a different direction with the next motor. Text or pm me 8103575