Valve Spring Kit Toyota 4AGE 16V | SPRK-TC25D | Supertech

Supertech High Performance Engine Valves, Springs, Valve Accessories, Pistons and Block Guards Supertech valve spring kit SPRK-TC25D Dual valve spring kit Toyota 33,11kg/35,4mm (73 @ 35,4) Dual valve spring kit 33,11kg/35.4 + RET-2500 / T1 + Spring base SS-3012 + VS-T6SM (small oil seals) With the help of Supertech valve springs & titanium valve spring retainers, higher RPM/s can be run. It also eliminates valve flutter at high RPM/s. At high RPM/s, the rocker arms can break and the valve springs can jam. This can lead to engine damage! The Supertech valve springs have an extra adjusted spring rate. Advantages: The valve train becomes lighter thanks to the titanium valve spring retainers The motor revs up faster Higher motor RPM/s can be run The valve train becomes more stable during power increases We recommend our Supertech black nitrided intake valves and Inconel exhaust valves with all Supertech valve spring kits. Likewise, we offer the full range of Supertech: Valve keepers, mechanical tappets (rigid tappets) with matching shims and forged pistons. Make: Toyota Fits: Toyota 4AGE 16V Outer spring external diameter: 25,00mm Outer spring internal diameter: 18,00mm Inner spring external diameter: 18,00mm Inner spring internal diameter: 13,00mm Pressure valve seat: 33,11kg/35,4mm Pressure seat: 91,63kg/10,5mm Max. lift: 14,40mm Coil bind (under stress): 21,00 / 17,00mm Rate in lbs./mm: 12,60 retainers: RET-2500/T1 + Spring base SS-3012 + Oil Seal VS-T6SM (requires some machining of guide) Supertech/s valve springs are made of an extreme pure chrome-silicon-vanadium-steel alloy to assure a very good durability for performance motors with high revolutions. They are developed with the use of computer simulations to prevent material fatigue under extreme conditions. The holder are made of a certified titanium alloy and CNC milled for the perfect fit to provide a long durability.