We have a couple of Yeah folding bikes that use the Shimano SL-TX50-6R shifters. On one bike, the plastic housing for the shifter is cracked / broken. It's a 6 speed shifter. Does anyone know if it can be replaced with another brand shifter? If not, is there somewhere one can buy a Shimano replacement online?
Looking around on the internet, I see the part listed, but not a place to purchase it.