GSC Power Division Conical Valve Spring and Titanium Retainer Kit
2023–2026 Toyota GR Corolla
5017
Overview:
The GSC Power Division Conical Valve Spring and Titanium Retainer Kit is engineered specifically for the 2023 and newer Toyota GR Corolla, as well as compatible with the 2019+ Toyota GR Yaris. This high-performance valve spring kit is designed for enthusiasts seeking enhanced valvetrain stability and durability under aggressive driving conditions. By utilizing true conical valve springs, this kit offers superior control over valvetrain harmonics compared to traditional cylindrical or beehive springs, resulting in improved engine reliability and responsiveness.
Whether you are a spirited street driver or a track-focused enthusiast, this kit helps maintain precise valve control at high RPMs, supporting your vehicle’s performance upgrades and ensuring consistent power delivery.
Key Features:
This valve spring and retainer kit incorporates advanced design and materials to optimize valvetrain performance:
- True conical valve springs that effectively dampen and eliminate valvetrain harmonics for enhanced stability.
- Spring rates of 107 lbs at 1.310" installed height and 263 lbs at 0.838" (12mm valve lift), providing strong valve control at high lift and RPM.
- Titanium retainers reduce reciprocating mass, improving throttle response and reducing valvetrain wear.
- Designed to maintain harmonic stability better than cylindrical or beehive spring designs.
- Precision-engineered for direct fitment on 2023+ Toyota GR Corolla and 2019+ Toyota GR Yaris engines.
- Durable construction ensures long-lasting performance under demanding conditions.
Construction & Design:
The kit features true conical valve springs, a proven design in motorsports and high-performance applications. Unlike traditional cylindrical springs, conical springs taper in diameter, which helps reduce harmonic vibrations that can cause valve float or instability at high engine speeds. This design improves valvetrain control and reduces the risk of component fatigue.
The titanium retainers are lightweight yet strong, reducing the overall mass of the valvetrain assembly. This reduction in reciprocating mass allows for quicker valve response and less stress on valve train components, contributing to improved engine efficiency and durability.
Installation & Fitment:
This valve spring and retainer kit is a direct bolt-on upgrade for the 2023 through 2026 Toyota GR Corolla, as well as the 2019 and newer Toyota GR Yaris. It installs using factory mounting points and requires no modifications to the cylinder head or valvetrain components.
No cutting, drilling, or special tuning is required, making it an ideal upgrade for enthusiasts looking to enhance their engine’s valvetrain performance without extensive machine work.
- Direct fit for 2023–2026 Toyota GR Corolla
- Compatible with 2019+ Toyota GR Yaris
- No modifications needed for installation
What's Included:
- Complete set of conical valve springs
- Titanium valve retainers
Ideal For:
This kit is perfect for performance enthusiasts and racers who demand precise valvetrain control at high RPMs. It is especially beneficial for those upgrading their engine with higher lift cams or forced induction, where valve spring stability is critical to prevent valve float and maintain engine reliability.
- Track and motorsport applications
- High-performance street driving
- Engine builds requiring enhanced valvetrain stability
- Owners upgrading camshafts or forced induction systems
