Supertech Master Valvetrain Package with Standard Size Valves for the Toyota Celica & MR2 1ZZ-FE.

Supertech Master Valvetrain Package, with Standard Size Intake and Exhaust Valves, Supertech Dual Valve Springs, and Titanium Retainers for the Toyota 1ZZ-FE Two Spring Styles / Seat Pressures are available, Please select the option that best fits your needs in the drop down menu below. SPR-TS2081/TC: Single Springs Single Spring -- 27.50mm OD -- 20.00mm ID 60 lbs seat pressure -- 60 lbs @ 33.60mm 12.90mm Max Net Lift 20.70mm Coil Bind 9.60 lbs/mm Rate SPR-TS1015/TC: Dual Springs Outer Spring -- 27.50mm OD -- 20.00mm ID Inner Spring -- 20.00mm OD -- 15.20mm ID 81 lbs seat pressure -- 81 lbs @ 34.00mm 13.30mm Max Net Lift 20.70mm Coil Bind 12.10 lbs/mm Rate Also Included in the Master Valvetrain Package are a set of eight intake (TIVN-1021) and eight exhaust valve's (TEVN-1021) in Standard Size. Along with sixteen Titanium Retainer's (RET-TS5.5/TC).