Supertech Exhaust Valves for 2003-2008 Audi S4 4.2L 40v V8 Engines

Supertech Exhaust Valves for 2003-2008 Audi S4 4.2L 40v V8 Engines

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Supertech Exhaust Valves for 2003-2008 Audi S4 4.2L 40v V8 Engines

A
EVI-1206S
Head Diam: 30.90mm (+1mm)
Stem Diam: 5.94mm
Length: 94.80mm
Material: Inconel
Groove Type: Single Groove
Valve Type: Exhaust
Keepers: KPR-6S/7 (Included)

*Single Valves Are Also Available In The Drop Down Menu Below*

Supertech manufactures a variety of high performance Inconel valves for many applications. These valves are manufactured from a Nickel base super alloy material (Inconel 751 or Nimonic 80A) this material is chosen because it is designed to withstand very high temperatures. These valves feature a one-piece forging, hardened tip, and our “superfinish” stem. Our Inconel valves are extremely popular choice for turbo and supercharged applications.

Supertech Sodium Filled Valves made of Inconel / Nimonic Alloy offer a significant reduction in valve head temperatures that are required for today’s modern turbo engines. 

A Cooler Valve improves the material strength and durability while allowing the tuner more flexibility and a wider range of spark timing advances. Combine that with an  average weight reduction of 10% and there isn’t a cooler valve on the market