Manley Race Series Stainless Steel Exhaust Valves (EJ20, EJ25)

Manley valves have set the standard for excellence in quality, material and design in the performance world for four decades. Manufactured from proven Race Master materials, Manley valves feature chrome stems, hard tips, fully machined surfaces and swirl polished radii. Many applications are Pro Flow design for maximum air flow. 

4.00 lbs
Manley EJ20/EJ25 SS Valves
4.00 lbs
Our Price: $146.99

Manley Performance has been manufacturing the finest stainless steel valves for over 40 years. Manley valves have been the standard of the industry from their inception; a fact that still remains true even as we've shifted our focus and resources to the Sport Compact Market.

Manley Performance Sport Compact stainless steel valves utilize our exceptional "Race Series" alloy and are manufactured to the highest quality standards.

Manley valves are designed to outflow and outperform all others even in the most severe environments. Manley stainless valves feature gorgeous yet durable chrome stems, swirl polished under heads, fully hardened tips, completely machined combustion faces, closely controlled margin heights, and exact stem to seat concentricity to render a finished product that is unsurpassed.



  • Head Diameter:     32mm or 33mm
  • Stem Diameter:     5.96mm/.2345"
  • Installed Height:     Stock
  • O/A Length:     104.75 mm
  • Tip Length:     3.5 mm
  • Underhead Angle/Radius:     25° x 11/32"
  • Margin:    .060
  • Seat Width:     .080"
  • Top of Head:     20° Dish



  • EJ205
  • EJ255
  • EJ257

Note: Manley Performance strongly recommends that customers check their valve guide size in order to achieve the proper valve stem to guide clearance. Guides may need to be honed when replacing stock factory valves.

warning_symbolWARNING: Operating, servicing and maintaining a passenger vehicle or off-road vehicle can expose you to chemicals including engine exhaust, carbon monoxide, phthalates, and lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. To minimize exposure, avoid breathing exhaust, do not idle the engine except as necessary, service your vehicle in a well-ventilated area and wear gloves or wash your hands frequently when servicing your vehicle. For more information go to

4.00 lbs
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