Toyota G16E-GTS high performance beehive valve springs with titanium retainers for GR Corolla /GR Yaris. Remove OEM base and fit supplied base. Intake: 100lb seat pressure at 35.0mm installed height. 198lb at 12.0mm valve lift.Exhaust: 87lb seat pressure at 36.7mm installed height. 178lb at 11.5mm valve lift. Spring coil bind height (solid height) 22.0mm.
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