HKS 11003-AN016 GTIII-800 Full Turbine Kit for Nissan GT-R R35 VR38DETT

The HKS 11003-AN016 GTIII-800 Full Turbine Kit is a high-performance twin-turbocharger system engineered for the Nissan GT-R R35 equipped with the VR38DETT engine. Designed as a comprehensive upgrade over both the factory turbos and the previous HKS GT800 series, this kit delivers dramatically improved power potential and boost response in a bolt-on symmetrical layout.

At the core of the GTIII-800 system are two newly developed HKS GTIII turbines arranged in a symmetrical configuration. The updated compressor and turbine wheel sizing—combined with a revised turbo housing—enables quicker spool and enhanced low-end torque compared to the outgoing GT800 kit, with gains of more than 60ps over the predecessor. The lightweight billet turbine wheel design promotes linear boost delivery across the RPM range. With full engine modifications and upgraded internals, this kit supports a target output of 800ps (approximately 789 hp).

Key Features:

• Twin GTIII-RS / GTIII-RSR turbochargers in a symmetrical layout for balanced performance
• Lightweight billet turbine wheel for rapid spool and linear boost response
• Compressor wheel: 65mm (GTIII-800) vs. 74mm (GT800) vs. 56mm (OEM)
• Turbine wheel: 56mm (GTIII-800) vs. 60mm (GT800) vs. 53mm (OEM)
• Preset boost pressure: 88.3 kPa (0.9 kgf/cm²)
• A/R ratio: 0.75
• Heat-resistant cast exhaust manifold with 52mm pipe
• GTII 7460 heat-resistant steel cast turbine housing
• Twin HKS GTII 50mm wastegates for stable boost control
• SUS304 stainless steel front pipe (60mm → 75mm)
• Stainless steel wastegate return piping
• Includes turbines, turbine brackets, cooling and oil piping, and all necessary hardware

Installation Notes:

• Engine removal from the vehicle is required for installation
• Minor modifications to factory heat shields, water lines, and engine bay components are necessary (cutting and welding required)
• Not compatible with metal catalytic converters
• Achieving 800ps output requires upgraded engine internals (pistons, connecting rods, fuel system, etc.)
• For competition/race use only — professional installation is strongly recommended

The HKS GTIII-800 Full Turbine Kit represents a significant evolution in the GT-R R35 forced induction upgrade path, offering both a straightforward bolt-on turbo replacement for moderate builds and a foundation capable of supporting extreme high-power applications when paired with appropriate supporting modifications.