Hastings Rings For S&S 3 5/8, .040 For Harley-Davidson

WITH 1.5MM (.058")/1.5MM (.058") COMP RINGS/4.2MM (0.155) OIL RINGS; STD BORE SIZE 3.625"/ 92.075MM Fits: Most S&S Evo & pre-Evo engines Units: 2CY