Ferrea Heavy Duty Valve Spring Set OF 24, Dual Spring S10039 (90-96 NISSAN 300ZX)

Ferrea Heavy Duty Valve Spring Set OF 24, Dual Spring S10039 (90-96 NISSAN 300ZX)

Regular price $658.56 $529.99 Sale

Ferrea Valve Springs are the top of the line when it comes to valve train. We use them in our cars and suggest them to our customers. They are only to be used with Ferrea Retainers.

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. Ferrea valve springs are developed from high strength alloys, including premium grade chrome silicon steel. Our springs are heat-treated and stress relieved, which dramatically increases the spring’s life. Our valve springs provide the stability needed for high lift, high rpm racing engines, while minimizing the load loss for today’s aggressive valvetrain combinations.