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SKU: 2145-12
GSC Power-Division Nissan RB26DETT Skyline GT-R 1989-2002 31.15mm Head +1mm OS 101.74mm Long Exhaust Valve - Set of 12
GSC Power-Division exhaust valves deliver reliable performance for the Nissan RB26DETT engine in 1989-2002 Skyline GT-R models including R32 R33 and R34. This set of 12 features 31.15mm head diameter +1mm oversize and 101.74mm extended length for high boost twin-turbo applications. Enhanced airflow and heat resistance support demanding race and street builds.
Key Features
- Forged 21-4N Stainless Steel: One-piece construction handles extreme heat and boost pressures for long-term durability in turbocharged RB26DETT engines
- 31.15mm Head +1mm Oversize: Larger diameter boosts exhaust flow improving power and throttle response in performance GT-R heads
- 101.74mm Extended Length: 2mm longer than stock supports thicker valve seats to prevent recession under high boost loads
- Swirl Polished Stems: Reduces friction and wear ensuring smooth operation and extended valve life at high RPM
- Reduced 7mm Stem Tip: Provides clearance for performance stem seals and keepers enhancing valvetrain stability
Product Notes
- Complete set of 12 exhaust valves for full RB26DETT cylinder head replacement
- Designed for ported heads and high boost setups with proper valvetrain components
- Packaged securely to protect precision-machined surfaces during transit
Installation Notes
- Professional installation recommended.
- Machine valve seats to accommodate +1mm oversize head diameter
- Pair with GSC stem seals keepers and springs for optimal compatibility
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1989-1994 | Nissan | Skyline | R32 GT-R (BNR32 RB26DETT) |
| 1995-1998 | Nissan | Skyline | R33 GT-R (BNR33 RB26DETT) |
| 1999-2002 | Nissan | Skyline | R34 GT-R (BNR34 RB26DETT) |
Why Choose GSC Power-Division?
- Proven in professional race engines and top GT-R builds worldwide
- Manufactured with precision CNC machining for exact fit and flow
- Backed by rigorous testing for high RPM and boost reliability
Frequently Asked Questions
-
Q: Do these valves fit stock RB26DETT heads without modification?
A: The +1mm oversize head requires valve seat machining but stem length and design match stock guides -
Q: What material provides the heat resistance?
A: One-piece forged 21-4N stainless steel excels in high-temperature exhaust environments -
Q: Is a warranty included?
A: Limited lifetime warranty covers manufacturing defects when installed by qualified technicians
Shipping & Handling
- Method: UPS Ground or FedEx
- Availability: Special order - typically ships within 3-5 business days
- Packaging: Protective box dimensions 12in x 8in x 4in
- Weight: 2 lbs
GSC Power Division
GSC Power Division is a manufacturer of precision-engineered camshafts, valve springs, and valvetrain components designed for high-performance and competition engines across domestic, import, and diesel platforms. Founded by engineers with deep roots in motorsport, GSC Power Division components are machined to exacting tolerances and heat-treated to survive the demands of forced induction and high-rpm applications that destroy stock valvetrain parts. The brand is particularly well-known in the Mitsubishi Evo, Subaru STI, Nissan RB, and Toyota 2JZ communities where aggressive camshaft profiles are essential for extracting maximum power from turbocharged four-cylinder and six-cylinder engines. Whether building for drag racing, road course competition, or a high-powered street car, GSC Power Division camshafts and valve springs are a proven upgrade path. Popular Upgrades GSC Power Division S1, S2, and S3 camshafts are the most popular selections, with each profile offering progressivel...
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