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
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