KH 4 piston parts
just did this myself//cheaper to buy re-manufactured// pistons were $16-$22 ea IF you can find them !!!!!!!!!! seal kit $25-$40
factor in rusty/ porous caliper core bores//broken seized bleeder screws// and the above
just got a set from summit after I took my caliper cores apart and the the bores were really pitted bad I am exploring the idea of machining pistons and sleeves for the calipers
is it true (rumor control) ssbc is out of business ???