Actual part may differ from image above.
This Kit contains 24 Ferrea Dual Intake & Exhaust Valve Springs
Ferrea Valve Springs are developed from high strength alloys, including premium grade chrome silicon steel. These springs are manufactured with state-of-the-art equipment. Our springs are heat-treated and stress relieved, which dramatically increases the spring’s life.
The design and processes on these dual valve springs are optimized to reduce valvetrain harmonics and provide greater stability on high horsepower applications. We use high grade premium super-clean PAC alloy materials and maintain tight tolerances for those unique aftermarket cylinder heads.
Strict quality control procedures and cycle testing ensures consistency from batch to batch. Ferrea Valve Springs provide the stability needed for high lift, high rpm racing engines, while minimizing the load loss for today’s aggressive valvetrain combinations.
– Inner Spring OD 18.23mm
– Inner Spring ID 13.4mm
– Outer Spring OD 25.19mm
– Outer Spring ID 18.23mm
– Open Pressure 180lbs @ 27.5mm
– Max Lift 12mm
– Coil Bind 24.3mm
– Manufacturer Ferrea
– Valve Spring Type Dual
– Seat Pressure 75lbs @ 37.5mm
– Valve Spring Rate 266lbs/inch
This Spring requires Ferrea Titanium Retainer # E11122 and BOTH Ferrea Spring Seat Locators # SL1131 & SL1132
Replaces OEM Part # 022-109-623-G / 022109623 G / 022 109 623 G / 022109623G
