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...

The new Ferrea Valve Springs are processed with premium-grade alloy and feature special thermal treatment. Ferrea's advanced spring design and material specs have uniform load and stress distribution...

Kit includes the following:- Dual Springs #S10179 (24)- Titanium Retainers #E11145 (24)- Seat Locators #SL1174 (24)- Valve Locks #K10037 (24)

Ferrea Dual Valve Springs 2JZGE 2JZGTE Supra MK4 Toyota The design and processes on these dual valve springs are optimized to reduce valvetrain harmonics and provide greater stability on high...

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...