4200 RPM Purple Stinger Spring for Extreme High-RPM Builds

Radical revs require radical parts— the Purple Spring engages at 4200 RPM, perfect for overbored or piped engines.

• Purple marking for high-end specialist identification.
• Extra tension handles intense vibrational stresses.

In unrestricted classes, it maximizes airflow and rev potential, delaying drag until the perfect moment. Feel the surge as power finally connects, propelling you past rivals.

For those engineering edge-of-limit karts, this is the tune that tips scales.

Frequently Asked Questions

Q: Why should I choose the 4200 RPM Purple Spring over lower-rated springs?

A: The 4200 RPM Purple Spring is designed for high-RPM builds, such as overbored or piped engines. It delays clutch engagement to a higher RPM, allowing your engine to reach its power band before the clutch locks up, which is essential for maximizing performance in unrestricted racing classes.

Q: How do I know if this spring is compatible with my current clutch setup?

A: This spring is designed for Stinger clutch systems. Because it provides extra tension to handle intense vibrational stresses, ensure your clutch drum and hub are in good condition to handle the increased engagement force.

Q: Can I mix and match different spring colors in my clutch?

A: It is highly recommended to use a uniform set of springs to ensure balanced engagement. Mixing spring rates can cause uneven wear on your clutch shoes and erratic engagement, which will negatively impact your kart's handling and acceleration.

Q: How often should I replace my clutch springs?

A: Clutch springs are wear items that lose tension over time due to heat and constant cycling. If you notice your kart engaging at a lower RPM than usual or experiencing "slipping" during acceleration, it is time to replace your springs to maintain peak performance.

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