Ferrea Dual Valve Springs for Toyota Supra 2JZ 2JZGE 2JZGTE Add Retainers & Locators:Yes (High Pressure) After testing

After testing

Inertia Weight: 3

BOLT PATTERN: 5 x 4

and multistage shot peened for extended life and durability

Ferrea Dual Valve Springs for Toyota Supra 2JZ 2JZGE 2JZGTE Add Retainers & Locators:Yes (High Pressure) After testingFerrea Dual Valve Springs for Toyota Supra 2JZ 2JZGE 2JZGTE Our Take Like all of their products, Ferrea's Valve Springs Set the standard for aftermarket performance on the 2JZ Cylinder Head. This Dual Valve Spring Kit is recommended for any Toyota 2JZ utilizing aftermarket camshafts. This kit REQUIRES use of Ferrea Titanium Retainer #E11037 and BOTH Ferrea Spring Seat Locator #SL1001 and Factory supplied Spring Seat Locator. You can add the retainer