A set of high-tension valve springs for all VW 4-cylinder 16v engines, these will fit your 1.8 KR/PL-code head or your 2.0l 9A or ABF. The benefits are the same. -means to REV and make big air flow.
Springs do not work along, of course. Go with lighter but stronger 16V Titanium Valve Retainers, too.
![Supertech springs + retainers: VW 16V](/images/supertech_valves+springs.jpg)
Combine these tuning "weapons" with 16v Lightweight Lifter "ammunition" for serious motorsport "firepower". This is the winning combination for hardcore builders.