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About S&S Cycle High-Performance Valve Spring Kit

S&S Cycle High-Performance Valve Spring Kit

  • . 550in. lift double valve spring kit
  • Includes 4 inner springs, 4 outer springs and 4 aluminum top collars
  • Use with stock-style bottom collar, valve guides, valves with stock 3/8in. stem and stock keepers
  • Compatible with thin-stem valves if thicker keepers that maintain correct valve stem-top collar engagement are used
  • Late single bottom collars are included for use in S&S cylinder heads for Shovelheads and stock L81-85 heads.

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