The little niva got new front brakes. One side started to drag the brakes, the brake calipers are original 40 years old, i thought about just replacing the seals but new calipers are not that expensive. The piston part is sold separately i bought left and right and replaced them and reused the steel. Installed a new set of brake pads, bleeding the air from the system was a bit difficult but now i have good brakes, i apply grease around the bleeders to protect them. The niva has an unusual brake system, the front calipers are on two circuits, because of that it has two brake hoses per brake caliper.