Supertech - Black Nitride Intake Valves (Set of 10) - 2017-2025 Audi RS3; 2018-2023 Audi TT RS

Supertech intake valves are made exclusively from an enhanced versions of EV8 (21-4N) steel. This is the highest grade of steel available and provides the strength to withstand just about any application.

Valves play a critical role in any performance-orientated engine. Upgrading the valves in your VW or Audi engine increases reliability with slow forging processes, upgraded aerospace alloys, CNC machining, and heat treatments to withstand extreme abuse from high-powered race engines and daily driven road vehicles making beyond factory power levels. The power an engine produces is limited to airflow. As the smallest chokepoint in your cylinder head, performance valves are engineered to increase airflow by limiting turbulence created by valve stem obstruction and careful detailing of the valve head and valve angles.

Features

• Head Diam: 33.85mm(std)
• Material: Stainless Steel 21-4N
• Groove Type: Single Groove
• Length: 103.9mm
• Stem Diam: 5.98mm
• Back-cut angle
• Undercut stem
• One piece forged valve (non-magnetic)
• Magnetic friction welded wafer, Hardened to 52 HRC min
• Black Nitride for superior hardness keeping core ductility
• “Superfinish” valve stem with a surface roughness of about 1/3 of a regular valve

Benefits

• Less Friction
• Better Flow Rates
• Better Sealing
• Improves durability and reduces carbon build up

What's In The Box?

• 10 - Intake Valves

Warranty

• Due to the nature of the application, these parts are sold without any express warranty or any implied warranty of merchantability, or fitness for a particular purpose.