Kiggly Racing Beehive Valve Spring Set | Mitsubishi 4G63 DSM / Evo (SS-HP)

Kiggly Racing

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High Pressure Beehive Valvesprings 4G63

This thoroughly proven spring set has powered 4g63 vehicles ranging from 6-second drag cars to high-mileage everyday drivers. Introduced in 2006, these were the first beehive valve springs available to the 4g63 platform. They are the best spring set you can use when targeting boost levels up to about 45psi and 11,000rpm.

Featuring PAC ovate wire "beehive" springs, designed with s a stress-optimized profile that minimizes spring mass and maximizes natural frequency. This means better stability at high rpm usage. The beehive design also features a variable natural frequency, resulting in better stability during surge points and self-damping. Combining these advanced design features with aerospace quality production and shotpeening results in a high performing, reliable combination.

The spring set includes our proprietary titanium retainers and steel seats to achieve an appropriate seat pressure that will prevent excessive wear in long-term street applications. The precision CNC machined grade 5 titanium retainers are optimized for mass and stress levels using finite element analysis and packaged for maximum clearance to the valve stem seals. Any OEM replacement or smaller diameter valve seals can be used and clearance to the retainer is about 14mm.

In higher boost drag racing applications these springs can be shimmed for increased seat pressure. The limiting factor in the 4G63 valvetrain is typically boost levels, not RPM. To protect against this, we recommend targeting seat pressure at about 1.7x your absolute manifold pressure (boost + 14.7psi). This tends to be the worst case scenario and varies widely with the engine’s parts combo.


  • The Original Beehive Spring Kit brought to the 4G63 Platform in 2006
  • Fits all 4G63 engines including DSM and EVO
  • Compatible with all popular cam profiles
  • Seat pressure = 97lbs at 1.440"
  • Rate = 325lb/in
  • Max recommended lift = 0.500"
  • Min recommended spring height at full lift = 0.900"
  • 100% Made in the USA


  • Supports high-boost applications up to 45psi and 11k RPM
  • Better stability during surge points and self-damping
  • Designed with appropriate seat pressure to prevent excessive wear in long-term street applications


  • 1990-1999 1G / 2G DSM
  • 1992-2006 Mitsubishi Evo 1-9

What's In The Box?

  • (16) Titanium Retainers
  • (16) PAC Racing Springs
  • (16) Treated Steel Seats


Customer Reviews

Based on 9 reviews

Great springs. I recommend it to everyone

Awesome springs

The overall quality of the Kiggley parts we immaculate and perform well. I’d recommend them to any and all racers.

Renaldo Thomas
Quality Product

These are the best springs ever. Mated great with my ferrea valves. Great quality.

Great Product

These valve springs were recommended to me by several different people in the 4G63 realm and I couldn't be happier with them. Quality is top notch and will be great paired with my GSC S2 cams.

Rene Rego
Kiggly Springs

These springs are the best bang for buck. Even if your not doing a crazy hp build, its always good to know your springs will not crap out on you. It's better to buy things once rather than twice.