Rite I'm running a malossi 172 kit brand new on a doner engine typhoon 125 it's been completely rebuilt at present running at 21mm carb with a pm tuning pipe now I've just purchased a 25mm dellorto pbhl brand new . Now what reeb block do I need that will fit straight in without any messing around and also wot carb manifold . Wot needles , jets , atomiser etc do I need to buy for the set up that I'm running please
A 100 main is a ball park figure for a 25mm you may need to go up or down a few depending on your setup.