Supertech Sport Valve Springs Kit suitable for Hyundai i30N/Veloster

Supertech reinforced valve spring kit including titanium spring retainer  for all G4KF engines, such as in the Hyundai i30N and Veloster. The Supertech sport spring kit with titanium valve spring retainers allows for higher RPMs. It also eliminates valve flutter at high rpm. At high RPMs, 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 to counteract the problem. Features: lighter valve train thanks to the titanium valve spring retainers faster revving higher engine speeds possible Especially recommended for performance upgrades We also recommend inlet valves and Inconel exhaust valves. Supertech's valve springs are made from an extremely pure chrome-silicon-vanadium steel alloy to ensure very good durability even at high rpm for performance upgraded engines. Designed using computer simulations to ensure that even under extreme conditions the materials will not fatigue. The holders are made of certified titanium alloy and CNC milled for optimal fit to ensure long life.