Supertech Toyota 2JZ Dual Valve Spring Kit
Supertech SPRK-TS1015 – Dual Valve-Spring & Titanium Retainer Kit
Supertech SPRK-TS1015 is a performance dual-spring package developed for a wide range of turbo and high-rev engines that share the TS1015 spring architecture (Toyota 2JZ/3S-GTE, Subaru EJ20/EJ25, Nissan CA18, GM Ecotec LSJ, Mitsubishi 4G63/420A, etc.). The kit pairs stiff, fatigue-resistant springs with lightweight titanium retainers to eliminate valve float at elevated boost and RPM.
Key Benefits
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High seat & open pressures – around 80-90 lbs seated and 210-240 lbs open (engine-specific) keep valves under full cam control beyond 8 000 rpm.
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13–14 mm max lift capability accommodates aggressive aftermarket camshafts without coil-bind risk.
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Chrome-silicon vanadium alloy springs: shot-peened, heat-treated and stress-relieved for long fatigue life under extreme temps and harmonics.
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CNC-machined titanium retainers cut reciprocating mass, improving throttle response while reducing valvetrain stress at high speed.
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Complete drop-in kit – includes dual springs, retainers and seat locators matched and ready for installation.