Part number F6027 (Supertech VWEVN-1034) Ferrea 6000 series exhaust valve STD Audi / VW 4-5 cylinder engines - 1.8-2.0 16V, 2.2T-2.3 20V (KR, PL, 6A, 9A, ABF, 3B, AAN, ABY, ADU, 7A) Head Diameter: 28.1 mm Stem Diameter: 6.93 mm Overall Length: 98.3 mm Tip Length: 2.8 mm Reference: 22 Degree Flo Radius Groove. Stock Size. Special Alloy
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To manufacture the valves we use our exclusive two-step slow forging process using EV8 stainless steel on both intake and exhaust valves.We provide a special heat-treatment and stress relieving process, along with hard chrome stems and friction-welded hard tips. We finish with a swirl polished head. The valves feature flow improvements to deliver the power needed for today’s sophisticated racing engines.