.590" lift triple valve spring kit for late 1981-1984 Harley-Davidson® big twin models.
- Includes 4, steel top collars, 4 bottom collars, 4 each outer, middle, and inner springs, shims, and 8 keepers.
- Use with stock valve guides, stock valves with 3/8" stem, and stock keepers.
- Compatible with thin-stem valves if thicker keepers that maintain correct valve stem-top collar engagement are used.