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Manley 00-03 Subaru WRX (EJ20) / 04 STi Exhaust 32mm Stainless Extreme Duty Valve

Unleash the full potential of your Subaru WRX with the Manley Extreme Duty Valve. Engineered for the most demanding applications, this valve is built to withstand extreme force and heat, making it perfect for Top Fuel, Funny Car, and Marine Engine applications.

  • Ideal for specialized applications where extreme force and heat resistance is a must
  • Constructed with XH-432 XtremeAlloy for exceptional durability
  • Features chrome stems and hard tips for improved longevity and wear resistance
  • Optimized performance with swirl polished under head areas and fully machined combustion faces
Make Model Year Type
Saab 9-2X 2005 Aero
Since 1966 Manley has been manufacturing race proven engine internals for the domestic and more recently sport compact performance markets. Their range of products include: cranks, pistons, rings and wrist pins, connecting rods, pushrods, drive and oil systems, cylinder head components and valves. Manley products are designed to satisfy the needs of racing’s top engine builders who demand the highest quality products available. As a result, Manley performance products can be found in a variety of vehicles, including OE supercars and record breaking street performance and race cars.
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