SKU: 2245-12
GSC P-D Nissan VR30DDTT 28.5mm Head STD 97.5mm Long Super Alloy Exhaust Valve - Set of 12 | 2017-2024 Infiniti Q50 Q60 Nissan Z
GSC Power-Division super alloy exhaust valves provide direct replacement for Nissan VR30DDTT engines in 2017+ Infiniti Q50, Q60, QX55, and 2023+ Nissan Z models. This set of 12 valves features 28.5mm head diameter and 97.5mm overall length with standard 6.98mm stem for seamless fit in high-boost twin-turbo V6 applications. Engine builders rely on these valves for their ability to handle extreme exhaust gas temperatures while maintaining flow and durability during prolonged high-RPM operation.
Key Features
- Super Alloy Material: Proprietary nickel-based alloy resists heat up to 1600°F common in turbocharged VR30DDTT engines ensuring longer life under boost
- Precise Dimensions: 28.50mm head diameter 97.50mm overall length 9.00mm tip standard 6.98mm stem diameter and 2.00mm margin for exact OEM-spec fitment
- One-Piece Forged Design: Forged construction eliminates weld failure points delivering strength for 8000+ RPM valvetrains
- Swirl Polished Head: Polished valve face and 3-angle seat interface boost exhaust flow by 15% over stock for quicker spool and power gains
- Enhanced Keeper Groove: Reinforced groove secures keepers firmly reducing valve train noise and improving retention at high lift
Product Notes
- Valve weight 52g each total set weight 1.8 lbs MPN 2245-12 designed for stock or upgraded valve seats and guides
- Inspect guides and seats prior to installation to ensure compatibility with performance spring pressures
- Special order item handles with care to prevent bending during transit
Installation Notes
- Professional installation recommended.
- Set exhaust valve lash to 0.011-0.013 inches hot per GSC specifications for optimal clearance
- Compatible with stock retainers and locks pair with GSC valve springs for high-lift cams
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2017-2024 | Infiniti | Q50 | 3.0t Luxe Pure Sensory Red Sport |
| 2017-2023 | Infiniti | Q60 | 3.0t Luxe Premium Red Sport |
| 2022-2024 | Infiniti | QX55 | 3.0t Luxe Sensory |
| 2023-2024 | Nissan | Z | Performance ProtoSpec |
Why Choose GSC Power-Division?
- Proven in drag racing and time attack with VR30DDTT builds worldwide
- CNC-machined in USA from premium aerospace-grade materials
- Backed by 1-year warranty against manufacturing defects
Frequently Asked Questions
-
Q: Do these fit the 2023 Nissan Z VR30DDTT?
A: Yes direct OEM replacement for all 2023-2024 Nissan Z models with VR30DDTT engine including Performance and ProtoSpec trims -
Q: What makes the super alloy different from stock?
A: Super alloy offers superior heat fatigue resistance over OEM steel allowing safe operation at 30+ psi boost and 150+ whp gains -
Q: Are valve seals or springs included?
A: Valves only seals springs retainers and locks sold separately recommend GSC spring kit for full valvetrain upgrade
Shipping & Handling
- Method: UPS Ground or FedEx Ground
- Availability: Special order ships within 3-5 business days
- Packaging: Secure foam-lined box 12 x 6 x 2 inches
- Weight: 1.8 lbs
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