Application:  Part # = 13100-KA4-711
Part Description = PISTON (STD) - (replaces 13100-KA4-000), PISTON RINGS - 13122-KA4-000
CR250R-B 1981 250 CR250R Off Road
CR250R-C 1982 250 CR250R Off Road
CR250R-D 1983 250 CR250R Off Road

NOS, never mounted, never used.