Description
Product Fitment:
2013-2016 Scion FR-S
2013-2020 Subaru BRZ
2017-2020 Toyota 86
Built for performance and engineered for longevity, Supertech’s +1mm Oversized Intake Valves are manufactured from an enhanced version of EV8 (21-4N) stainless steel, one of the highest-grade materials available for valve construction. These valves are designed to thrive under high-performance and high-heat conditions, making them ideal for naturally aspirated and turbocharged applications alike.
Precision-forged in a one-piece, non-magnetic design, these valves undergo advanced treatments such as Black Nitride coating and Superfinish polishing, delivering superior strength, reduced friction, and improved flow characteristics. With a +1mm oversize head and undercut stems, you’ll see better airflow and sealing, enhancing both power and efficiency.
Features:
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Head Diameter: 36.00mm (+1mm Oversized)
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Stem Diameter: 5.46mm
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Valve Length: 105.00mm
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Material: Enhanced Stainless Steel 21-4N (EV8 grade)
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Groove Type: Single Groove
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Back-Cut Angle and Undercut Stem for increased flow
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One-Piece Forged Construction (non-magnetic)
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Black Nitride Coating for increased surface hardness and longevity
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Magnetic Friction Welded Wafer, hardened to 52 HRC min
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Superfinished Valve Stems – ultra-smooth surface for lower friction and wear
Performance Benefits:
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Improved airflow and sealing
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Reduced friction for smoother operation and increased RPM capability
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Better durability and wear resistance, even under high-heat conditions
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Less carbon buildup, improving long-term performance
What’s in the Box?
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8x Supertech +1mm Intake Valves
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