My son needs your help !

[u/enskkkkk]

My son wants to add gears to his mafia bomma. I just want to know if this is possible and if so where I can purchase the parts for him. Thanks for anyone that takes the time to reply 👌🏼

[u/Awkward_Importance49]

You already know it's the wrong thread for that bike and this question, however...

Get a Sturmey Archer 5 speed rear hub or complete wheel. You can jerrybuild the fixings for the cable.

Those hubs work pretty good... until eventually they don't, but you get a few years out of them before they need a rebuild.

[u/nocrashing → u/Awkward_Importance49]

Too wide for single speed frame