Kawasaki made in the H1 kick levers from production to a replacement lever one would have bought in the late 70's/early 80's. As you can see, they beefed them up significantly. These are the later kickers (for '73 up bikes)

H1/A

H1/A


H2/A/B/C

 

S Series/KH

 

S1/2 vs KH