Supertech STD Intake Stainless Steel & Inconel Exhaust Valves Set for RSX Base Type S 02-06 K20A2 K20A3 K20Z1 Civic Si 02-11 K20Z3 TSX 04-08 K24A2
We manufacture our racing valves using only the highest quality materials available. We have spent countless hours studying these different materials as well as you applications to create just the right valve. Because of thermal fatigue the proper choice of material will greatly determine the valve performance and reliability. Supertech relentlessly test new materials to provide valves with unsurpassed fatigue resistance.
The Intake valves are black nitride coated, which is a hardening treatment that has been steadily growing in popularity over the last several years. These black Nitride coated valves feature harder surfaces and smoother finishes, providing less friction and subsequently longer life.
The Inconel Exhaust valves are a nickle base super alloy material that are used for exhaust valves in engines that reach very high temperatures, such as applications with turbo and superchargers.
30mm (Standard), 35mm (Standard)
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
5.48mm In / 5.45mm Ex
108.85mm In / 108.65mm Ex
Valve Head Size
Valve Head Diameter
Intake & Exhaust
Valve Stem Diameter
Inconel, Stainless Steel
Black Nitrided, Polished
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