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1.8L 20VT
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1.8L 20VT
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Set of 12 SUPERTECH/FERREA performance exhaust valves for 1.8T 20V engines: AEB, AGU, AJL, AJQ, AMK, ANB, APH, APP, APU, APX, APY, AQA, AQX, ARK, ARX, ARY, ARZ, AUL, AUM, AUQ, AVC, AVJ, AWP, AWT, AWU, AWV, AYP, BAM, BBU, BEX, BFB
The kits of 12 reinforced exhaust valves from SUPERTECH and FERREA for 1.8T 20V engines consist of 12 valves.
Find below (click on the images) the accessories for the 1.8T 20V engine:
Technical specification 
SUPERTECH valves are made from a forged blank that is then CNC machined for optimal precision. They then receive a heat treatment (which varies according to the valve's application) and are ground again (super-finishing process). SUPERTECH valves are checked by various means such as ultrasound, X-rays, laser measurement...
For more than three decades, SUPERTECH has strived to find the most suitable materials for each valve and each application in order to increase reliability. There are therefore different valve materials such as stainless steel, Inconel, titanium, sodium (the latter is present in the valve stem and allows better heat dissipation).
Technical specification 
The manufacturing processes of FERREA Racing Components valves are similar to those of SUPERTECH: slow two-stage forging, heat treatment and stress relieving over 48 hours, and CNC machining. These valves are designed to achieve better reliability in all circumstances but also to improve flow with a thinner stem at the valve head (Superflow Valve). FERREA develops different ranges/materials of valves to respond as closely as possible to the constraints of each engine and each application (naturally aspirated, turbo or nitrous applications).
