Supertech Performance Single Valve Spring and Titanium Retainer Kit Fits Nissan Skyline RB20, RB20DET Engines - 70lb. SPRK-2081/RB20 - Supertech Single Valve Springs - 70 lb Seat Pressure. Spring - 27.50mm OD - 20.00mm ID. 12.10mm Max Net Lift. Will Fit Nissan Skyline RB20, RB20DET Engines with Hydraulic Lifters. Complete set of 24 Single Valve Springs, 24 Titanium Retainer's, and Seat's. This Package Includes: Supertech Performance Single Valve Springs # SPR-2081/RB20, Supertech Retainer part # RET-NVG1015/T1, and Seat part # SS-2820-2.2. Supertech Performance Dual Valve ...

   SPRK-TS1015/2 - Supertech Dual Valve Springs - 84 lb Seat Pressure. Outer Spring - 27.50mm OD - 21.00mm ID. Inner Spring - 20.00mm OD - 15.20mm ID. 12.00mm Max Net Lift. Will Fit Nissan 300ZX - VG30, VG30DETT Engines. Complete set of 24 Dual Valve Springs, 24 Titanium Retainer's, and 24 Seats. This Package Includes: Supertech Performance Dual Valve Springs # SPR-TS1015/2, Supertech Retainer part # RET-NSR20/T1, and Seat part # SEAT-TS1015. Supertech Performance Dual Valve Springs are made with premium Super Clean Chrome Silicon Vanadium Steel alloy for higher performance and ...

   Supertech Performance Dual Valve Spring and Titanium Retainer Kit Fits Nissan 180SX - CA18, CA18DE, CA18DET Engines - 73lb. SPRK-TS1012/NCA - Supertech Dual Valve Springs - 73 lb Seat Pressure. Outer Spring - 27.50mm OD - 20.00mm ID. Inner Spring - 20.00mm OD - 15.20mm ID. 15.0mm Max Net Lift. Will Fit Nissan 180SX - CA18, CA18DE, CA18DET Engines. Complete set of 16 Dual Valve Springs, 16 Titanium Retainer's, and 16 Seats. This Package Includes: Supertech Performance Dual Valve Springs # SPR-TS1012/NCA, Supertech Retainer part #. RET-NVG1015/T1, and Seat part # SEAT-1015/2. ...