SKU: 1418-RN005 | UPC: 4957266610343
HKS Extension Kit (1418-RN005) 1989-2002 Nissan Skyline GT-R RB26DETT
The HKS Extension Kit (1418-RN005) separates the main turbine exhaust port from the wastegate bypass port to eliminate exhaust stream interference in stock turbine housings. Designed for 1989-2002 Nissan Skyline GT-R models with RB26DETT engines, it delivers smoother exhaust flow, lower backpressure, and consistent boost pressure across the RPM range for reliable power gains. Mandrel-bent SUS304 stainless steel construction ensures durability and heat resistance in demanding conditions.
Key Features
- SUS304 Stainless Steel Construction: High-strength, heat-resistant material withstands extreme exhaust temperatures while enhancing engine bay aesthetics with a polished finish.
- Quicker Turbo Spool: Individual ports reduce gas interference for faster boost buildup and improved throttle response from low to high RPM.
- Mandrel Bent Tubing: Precise bends maintain exhaust velocity and minimize turbulence for efficient flow and reduced pressure loss.
- Includes Extension Housing and Downpipe: Complete bolt-on assembly with divider flange connects directly to stock turbine outlet and lower exhaust housing.
- Enlarged Main Pipe Diameter: Minimizes swirl at turbine outlet to stabilize secondary exhaust pressure and prevent boost drop under load.
Product Notes
- Off-road use only.
- Pair with HKS exhaust systems for maximum flow efficiency.
- Securely packaged in protective box measuring 12 x 10 x 8 inches.
Installation Notes
- Professional installation recommended.
- Bolts directly to stock HKS or OEM turbine housing using provided gaskets and hardware.
- Compatible with stock downpipe flange. no cutting or welding required.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1989-1994 | Nissan | Skyline | GT-R BNR32 RB26DETT |
| 1995-1998 | Nissan | Skyline | GT-R BCNR33 RB26DETT |
| 1999-2002 | Nissan | Skyline | GT-R BNR34 RB26DETT |
Why Choose HKS?
- Decades of motorsport engineering for RB26DETT platforms.
- JDM precision manufacturing with rigorous quality testing.
- Field-proven design used in GT-R racing applications.
Frequently Asked Questions
- Q: Will this fit my R34 GT-R with stock turbo?
A: Yes, it mounts directly to factory BNR34 RB26DETT turbine housing without modifications. - Q: What material is used for the piping and flange?
A: Full SUS304 stainless steel for corrosion resistance and longevity under high-heat conditions. - Q: Does installation require custom tuning?
A: No tuning needed for stock setups. gains are immediate from improved exhaust flow, though ECU tuning enhances results.
Shipping & Handling
- Method: UPS Ground or FedEx
- Availability: In stock – ships same or next business day
- Packaging: Sturdy cardboard box 12 x 10 x 8 inches
- Weight: 7.9 lbs (3.6 kg)
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