TOYOTA 1UZ-FE VVTi. High performance, progressively wound PACALOY beehive valve spring and high-grade titanium retainer kit. This kit was engineered to match our camshafts for ultimate quality, performance and reliability. Retainer made to suit the OEM size 10.80mm diameter shims. 80lb seat pressure at 34.3mm installed height. 190lb at 12.0mm valve lift. Coil bind at 21.0mm.