GSC Power-Division Conical Spring set with Titanium Retainer and Chromoly Seat for the Porsche 991/992 Turbo

GSC Power-Division Conical Spring set with Titanium Retainer and Chromoly Seat for the Porsche 991/992 Turbo

$1,155.00
$1,155.00 $1,155.00
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GSC Power-Division Conical Spring set with Titanium Retainer and Chromoly Seat for the Porsche 991/992 Turbo
GSC Power-Division Conical Spring set with Titanium Retainer and Chromoly Seat for the Porsche 991/992 Turbo
SKU: GSC5094

GSC Power-Division Conical Spring set with Titanium Retainer and Chromoly Seat for the Porsche 991/992 Turbo

Low stock: 5
$1,155.00
$1,155.00 $1,155.00

Prop 65 Warning

This product can expose you to chemicals including Nickel, which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

The GSC Power-Division Conical Valve Spring Kit with Ti Retainer for the Porsche 991/992 Turbo 3.8 includes (24) titanium retainers, (24) Superfinished Conical light weight Springs, and (24) Chromolly Spring seats. 

True conical valve springs are not a new concept and are industry proven to provide several key advantages over traditional spring designs. A major advantage of conical springs vs. traditional cylindrical or beehive springs is the damping and removal of valvetrain harmonics. Of the three designs, conical springs are the front runners in valvetrain harmonic stability. Utilizing a varying coil diameter as well as coil spacing, a conical spring acts as a natural harmonic damper in the transfer of valvetrain shock.

This translates to less stress, less wear, and a longer life of the included components. This level of protection is needed in today’s engines being pushed to their physical and mechanical limits. Every GSC conical spring offers a super finished surface treatment to go along with the patented, multi-step heat treatment process. The finished product is an extremely reliable, high-performance spring allowing the users to push higher RPMs, use more aggressive cam profiles. 

Specifications
  • Max RPM OEM Profile : 10,500 RPM
  • Max Boost : 60psi
  • Designed to use factory Keepers
  • Valvetrain Mass Reduction
  • Intake: -19.1g
  • Exhaust: -19.0g
Product fitment
Porsche 991 Turbo

IMAGES ARE FOR ILLUSTRATION PURPOSES ONLY.

Valve Spring Value
Install Height (in) -

SPRING KITS

Valve spring performance is critical to engine durability, RPM capability, and valvetrain control. GSC Power-Division spring kits are engineered to provide the stability required for aggressive cam profiles, elevated boost levels, extended RPM ranges, and demanding racing environments.

Our spring systems are developed with careful attention to harmonics, installed loads, open pressures, coil dynamics, retainer compatibility, and long-term durability. Many GSC applications utilize advanced conical spring technology to improve damping characteristics, reduce harmonics, minimize spring stress, and maintain superior valve control at elevated engine speeds. The result is increased confidence when pushing horsepower, RPM, and boost beyond conventional limits.

Frequently Asked Questions

Why should I upgrade my valve springs?

Upgraded valve springs provide greater valve control at high RPM, higher boost pressures, and with more aggressive camshaft profiles. This helps prevent valve float and improves reliability.

What are the benefits of conical valve springs?

Conical valve springs offer reduced retainer mass, improved natural frequency, greater stability, and improved high-RPM performance compared to traditional cylindrical springs or beehive springs.

Do your spring kits include retainers?

Many GSC spring kits include titanium retainers. Refer to individual product descriptions for complete kit contents.

Can I reuse my factory retainers?

Only if specifically stated. Most performance applications should utilize the retainers recommended for the spring package.

GENERAL F.A.Q

Where are GSC products manufactured?

Many GSC products, including our camshafts, are designed, machined, and finished in-house at our facility in South Carolina, USA. We maintain strict quality control throughout the manufacturing process.

How long has GSC been in business?

GSC Power-Division has been serving the performance automotive industry for over 20 years, supplying racers, engine builders, tuners, and enthusiasts worldwide.

Do you sell directly to consumers?

Yes. We sell directly through our website and also through an extensive network of authorized dealers and distributors worldwide.

Does GSC cover engine damage?

GSC’s warranty covers defects in the product itself. Consequential damages, including engine damage, labor, towing, or vehicle downtime, are not covered.

Will racing void my warranty?

Products used in racing or competition environments are subject to conditions outlined in our warranty policy. Performance applications inherently involve risks beyond normal operating conditions.

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