Supertech 35mm Black Nitrided Intake Valve Set of 8 BRZ / 86 / FR-S 2013-2020 | SIVN-1050-8

Product Fitment: 

2013-2016 Scion FR-S

2013-2020 Subaru BRZ

2017-2020 Toyota 86

Crafted for performance and built to last, Supertech's standard-size intake valves are made from a specially enhanced version of EV8 (21-4N) stainless steel—the highest grade available for valve construction. These valves are designed to deliver superior durability and efficiency under the most demanding engine conditions, whether you're running naturally aspirated or boosted setups.

Each valve features a one-piece forged design, Black Nitride surface treatment, and precision Superfinish stem, combining to reduce friction, improve flow, and extend lifespan. The undercut stem and back-cut head further enhance airflow for better throttle response and higher RPM efficiency.

Features:

• Head Diameter: 35.00mm (Standard Size)

• Stem Diameter: 5.46mm

• Valve Length: 103.3mm

• Material: High-strength 21-4N Stainless Steel (EV8 grade)

• Groove Type: Single Groove

• One-Piece Forged Valve (non-magnetic)

• Back-Cut Angle and Undercut Stem for improved airflow

• Black Nitride Coating for enhanced surface hardness and longevity

• Magnetic Friction Welded Wafer, hardened to 52 HRC min

• Superfinished Valve Stems – ultra-smooth for reduced wear and friction

Performance Benefits:

• Reduced friction for higher efficiency and RPM stability

• Improved airflow and combustion sealing

• Increased resistance to heat and wear

• Reduced carbon buildup for longer valve lift

What’s in the Box?

• 8x Supertech Standard-Size Intake Valves (35mm)