Robust .020 Inch Clone Valve Spring Shim for Reliable High-RPM Performance

• Targets precise preload for valves under heavy load
• Reduces risk of coil bind in aggressive tuning
• Enhances throttle sharpness for immediate acceleration

In the heat of a race, every component counts—this .020" shim ensures your GX200 Clone delivers consistent power without faltering. It's the subtle upgrade that keeps your kart ahead, organizing your engine bay for efficient maintenance.

Trust SKU JF168-1246-20 to transform stock performance into race-winning potential, making track days more organized and victories more attainable.

Frequently Asked Questions

Q: Why do I need a .020" valve spring shim for my GX200 Clone engine?

A: A .020" shim is used to increase the installed height pressure of your valve springs. This helps prevent valve float at high RPMs and ensures your valves close properly under aggressive racing conditions.

Q: How do I know if I need a .020" shim versus a different size?

A: The shim size depends on your specific camshaft profile and valve spring tension requirements. You should measure your current spring pressure and installed height to determine if .020" provides the necessary preload without causing coil bind.

Q: What is coil bind and how does this shim help?

A: Coil bind occurs when the valve spring is compressed until the coils touch, which can damage your valvetrain. While shims increase pressure, they also reduce the available travel of the spring. Always check for clearance at full lift to ensure your setup remains safe.

Q: Can I stack these shims to get more thickness?

A: It is generally recommended to use a single shim of the correct thickness rather than stacking multiple thin shims, as stacking can lead to alignment issues and uneven pressure distribution.

Q: Is this shim compatible with stock GX200 Clone valve springs?

A: Yes, this shim is designed to fit standard GX200 Clone valvetrain components, providing a simple way to fine-tune your engine's performance for track days.

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