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  • Direct fit for Nissan RB25DET NEO

  • Drop-in parallel spring to suit OEM retainer and base


The Kelford Spring Set Drop-In is the perfect choice for any automotive enthusiast looking to increase performance. This spring set is designed to reduce valve float and increase engine RPMs. It allows for higher lift and faster valve closure, resulting in increased valvetrain stability and improved cylinder head performance. The Kelford Spring Set Drop In is crafted from premium materials for superior durability and reliability. It is the ideal choice for those who want to get the most out of their engine.



  • Intake: 95lb seat pressure at 38.95mm installed height. 185lb at 10.00mm lift

  • Exhaust: 97lb seat pressure at 38.65mm installed height. 190lb at 10.00mm lift
  • Coil bind 24.15mm




Kelford Drop-In Spring Set RB25DET NEO

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