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Valve Spring Shim .768 x .515 x .050
Valve Spring Shim .768 x .515 x .050
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Valve Spring Shim .768 x .515 x .050

Part Number: A204
Online Price: $0.50
Valve Spring Shim .768 x .515 x .050
Availability: In Stock.

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Description

Universal Valve Spring Shim – .050" Thick (.768" OD x .515" ID)


Achieve precise valve train control with this Universal Valve Spring Shim, machined to .050" thickness with a .768" outer diameter and .515" inner diameter. Designed for builders and tuners looking to increase valve spring pressure, this shim allows you to fine-tune installed height without changing springs.


By reducing the spring’s installed height by .050", this shim increases both seat pressure and over-the-nose pressure, improving valve control at high RPMs and helping prevent valve float—essential for performance engines in go-karts, mini bikes, and small race engines.


Important: Always measure installed height, valve lift, and available clearance before installation. Excessive shimming can lead to coil bind, resulting in engine damage.


Shim Dimensions:

  • Thickness: 0.050"
  • Outer Diameter (OD): 0.768"
  • Inner Diameter (ID): 0.515"


Key Features:

  • Increases spring tension for enhanced high-RPM valve control
  • Compact OD fits smaller spring seat areas for universal applications
  • Precision-ground steel for durability and consistent fit
  • Perfect for custom builds, small engines, and performance tuning
  • Ideal for GX-style heads and race-prepped small engines


Typical Applications:

  • Mini bikes, go-karts, and small engine racing
  • Honda GX200, Clone 196cc, and Predator builds (where size fits)
  • Cylinder heads with compact spring seats
  • Engine builds requiring fine adjustment of valve spring pressure

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