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
