Ferrea 6000 Series Exhaust Valve 30mm STD K20A2 K20A3 K20Z1 The 6000 Series Competition Valves are designed to provide excellent reliability in an environment of high spring pressures and roller cams, at a budget price. They have higher fatigue resistance and tensile strengths than our competitor’s best offerings.
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.
In Stock / Available
6000 Series Competition
Shipping Weight (Dimensional)
Honda / Acura
Civic Si 02-05 EP3, Civic Si 06-11 FA5 (Sedan), Civic Si 06-11 FG2 (Coupe), RSX Base 02-06 DC5, RSX Type S 02-06 DC5, TSX 04-08 CL9
K20A2, K20A3, K20Z1, K20Z3, K24A2
Valve Tip Length
Valve Head Size
Valve Head Diameter
Valve Stem Diameter
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