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SKU: 21004-AN009
HKS RB26DETT 2.8L Step Zero Piston Kit 86.5mm for 1989-2002 Nissan Skyline GT-R
The HKS 21004-AN009 delivers a full forged piston kit for Nissan RB26DETT engines in R32 R33 and R34 Skyline GT-R models. This 86.5mm bore setup increases displacement to 2.8L while nickel-plated crowns provide heat and detonation resistance for builds exceeding 800HP. Lightweight construction lowers reciprocating mass to support high RPM operation in street and track GT-R applications.
Key Features
- 86.5mm Forged Pistons: +0.5mm oversize bores create 2.8L displacement from stock 2.6L RB26
- Nickel-Plated Crowns: Resist extreme heat and prevent detonation in forced induction setups
- Lightweight Design: Cuts reciprocating weight for quicker revs and smoother high RPM power delivery
- Complete Kit Contents: Includes 6 pistons piston rings and wrist pins for direct bolt-in assembly
- Stock Compression Compatible: Maintains factory ratios with head milling for tuned builds
Product Notes
- Fits all RB26DETT engines with 86.5mm cylinder boring required
- Balance entire rotating assembly after installation
- Ships in official HKS branded retail packaging
Installation Notes
- Professional installation recommended.
- Engine must be fully disassembled for boring to 86.5mm
- Pair with HKS connecting rods for matched stroker assembly
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1989-1994 | Nissan | Skyline GT-R | R32 BNR32 |
| 1995-1998 | Nissan | Skyline GT-R | R33 BCNR33 |
| 1999-2002 | Nissan | Skyline GT-R | R34 BNR34 |
Why Choose HKS?
- Leading Japanese specialist in RB26 engine components
- Track record in global 1000+ HP GT-R race builds
- Crafted in Japan for precision fit and long-term reliability
Frequently Asked Questions
-
Q: Does this kit fit R32 R33 and R34 GT-R RB26DETT engines?
A: Yes fits all factory RB26DETT blocks after boring to 86.5mm diameter. -
Q: What material and plating are used?
A: Forged aluminum pistons with nickel-plated crowns for heat resistance. -
Q: What warranty and install requirements apply?
A: 1-year limited warranty professional machining and assembly required.
Shipping & Handling
- Method: UPS/FedEx Ground
- Availability: In stock - ships same or next business day
- Packaging: Official HKS retail box
HKS
HKS is a Japanese manufacturer of premium performance parts founded in 1973 that has been at the forefront of turbocharged engine development, producing turbochargers, exhaust systems, engine management, intercoolers, and supporting performance components for some of the most iconic Japanese sports cars ever built. The brand's GT and GTIII turbocharger series, Super Sequential Blow Off Valves, and Racing Suction intake kits are recognized globally as benchmark-quality products that combine Japanese manufacturing precision with decades of motorsport development experience. HKS products are particularly well-known in the Toyota Supra, Mitsubishi Evo, Subaru STI, Nissan GT-R, and Honda NSX communities, where the brand's heritage in building the world's fastest versions of these cars has created a loyal following among enthusiasts who want the best available components. From a simple racing suction kit to a complete GT turbo with intercooler and ECU tune, HKS provides an end-to-end perf...
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