SKU: 5017
GSC P-D Toyota G16E-GTS Conical Valve Spring and Ti Retainer Kit 2020+ GR Yaris 2023+ GR Corolla
The GSC Power-Division Conical Valve Spring and Titanium Retainer Kit PN 5017 upgrades Toyota G16E-GTS engines in GR Yaris and GR Corolla models. Conical springs provide progressive rates for precise valve control at extreme RPMs while titanium retainers cut valvetrain weight. This full kit supports aggressive cams and delivers reliable power in racing applications.
Key Features
- Conical Dual Spring Design: Allows maximum airflow for faster heat dissipation and enables revs beyond 10,000 RPM without surge
- Titanium Retainers: 6AL/4V Ti construction reduces retainer mass by 1.8 grams each versus steel for quicker valve response and less stress
- Precise Spring Rates: 90 lbs seat pressure at 1.650 inch installed height 210 lbs open at 1.750 inch lift with 13.00mm max lift capacity
- Premium Permalloy 50 Steel: Springs resist fatigue over millions of cycles maintaining consistent performance in high-boost setups
- Complete 16-Piece Set: Includes 16 conical springs and 16 Ti retainers for full G16E-GTS cylinder head coverage no partial kits
Product Notes
- Direct replacement uses OEM valve locks seals and seats no head machining required
- Pair with GSC camshafts for optimized lift and duration profiles
- Kit weighs 2.6 lbs and measures 10 x 6 x 4 inches in box for easy handling
Installation Notes
- Professional installation recommended.
- Set all springs to 1.650 inch installed height using GSC checker tool
- Compatible with OEM guides seats and locks verify cam lobe specs first
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2020-2024 | Toyota | GR Yaris | G16E-GTS |
| 2023-2024 | Toyota | GR Corolla | G16E-GTS |
Why Choose GSC Power-Division?
- Proven in World Rally Championship and drag racing with GR platforms
- Made in USA with micron-level tolerances for zero defects
- Dyno-tested to 11,000 RPM for real-world durability gains
Frequently Asked Questions
-
Q: Will this kit fit my 2021 Toyota GR Yaris G16E-GTS engine?
A: Yes it bolts on directly to all G16E-GTS variants in 2020+ GR Yaris and 2023+ GR Corolla with no modifications -
Q: What materials are used in the springs and retainers?
A: Springs use Permalloy 50 high-tensile steel retainers are aerospace-grade 6AL/4V titanium for lightweight strength -
Q: What warranty comes with the kit?
A: GSC provides lifetime warranty on springs against manufacturing defects and fatigue failure when installed correctly
Shipping & Handling
- Method: UPS Ground or FedEx
- Availability: In stock - ships same or next business day
- Packaging: Protective foam-lined box 10 x 6 x 4 inches
- Weight: 2.6 lbs
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