Brakes What hydraulic brake?

try AliExpress just be very with cable routing and hold downs it is up to you what you spend and what brand bleeding the breaks can be a pain in the neck look at bike inn too get new rotors too and brake pads so many types IT is like ice cream good luck your bike is a folding bike i would just get better calibrators like i did on my Schwinn with rotors i got Shimano 35% better stopping than stock when they make them they buy the cheapest parts the the Chinese will Bild it any way u want