PART # S10104
Harmonics or high frequency fatigue is present in all racing engines and will usually destroy the valvetrain if not controlled. Properly designed valve springs will control the dominant harmonics, provide the needed stability, and reduce valvetrain component wear.
This Spring requires Ferrea Titanium Retainer # E11000 or E11000LW or Ferrea Aluminum Magnesium Retainer # E10018 and Ferrea Spring Seat Locator # SL1003 (Discard OEM Spring Seat Locator)
90LBS@34MM - 205LBS@24MM