HKS GT Turbos

The HKS GT Series Turbos are based on ball-bearing Garrett units and like the HKS Signature Series have re-engineered compressor and turbine wheels along with specific A/R and trim levels. All GT Series Turbos are designed to be a perfect blend of power and response. HKS achieved this balance by first choosing to use a ball-bearing center cartridge to reduce friction along with an off-center turbo design for improved efficiency and flow. Next HKS carefully tested Trim and A/R levels along with different inlet and outlet diameters to achieve optimal power. The results of this combination are turbos that not only deliver amazing power, but also spool incredibly fast.

HKS GT Series Turbos are offered with a GT25 (T25) and/or T3 footprint and the turbine wheel is constructed of inconel. Inconel is a very expensive material that can withstand extremely high temperatures and is typically only used in the aero-space industry and on race cars. HKS GT Series Turbos are typically available in both external and internal Wastegate configurations.

Turbo Output Compressor Wheel Compressor Housing Turbine Wheel Exhaust Housing
  PS Trim Inducer (mm) Major (mm) Inlet (mm) Outlet (mm) A/R Trim Major (mm) Exducer (mm) Inlet Flange Oulet Flange A/R
GT-SS 280 60 46.6 60.1     0.60 76 53.8 47 GT25 Internal - GT25 0.64
GT2510 300 63 47.7 60.1 60 50 0.60 62 53 41.7 GT25 Internal - GT25 0.64
T3 Internal - Skyline Type 0.64
GT2530 320 63 47.7 60.1 60 50 0.60 76 53.8 47 GT25 Internal - GT25 0.64
T3 Internal - Skyline Type 0.64
GT2535 340 56 51.6 69 60 50 0.60 76 53.8 47 GT25 Internal - GT25 0.64
0.86
T3 Internal - Skyline Type 0.64
GT2540 350 46 51.7 76.2 60 50 0.60 76 53.8 47 T3 Internal - Skyline Type 0.64
GT2540R 360 46 51.7 76.2 70 50 0.50 76 53.8 47 GT25 Internal - GT25 0.64
370 0.86
GT-RS 400 52 51.2 71.1 60 50 0.60 76 53.8 47 GT25 Internal - GT25 0.64
GT2835 380 48 49.3 71.1 70 50 0.50 84 56.5 51.8 GT25 Internal - GT28 84 trim 0.64
0.86
400 52 51.2 71.1 70 50 0.50 External - GT30 align="center"0.61
0.73
0.87
410 56 53.1 71.1 70 50 0.50 1.01
1.12
GT2835Pro 420 56 53.1 71.1 100 50 0.50 84 56.5 51.8 T3 GT-Pro Type 0.68
GT2835ProS 420 56 53.1 71.1 100 50 0.50 84 56.5 51.8 T3 GT-Pro Type 0.68
0.87
GT2835R 420 56 53.1 71.1 100 50 0.50 90 56.5 53.6 GT25 Internal - GT28 90 trim 0.86
External - GT30 0.61
0.73
0.87
1.01
1.12
GT3037ProS 480 56 57 76.2 100 50 0.60 84 60 55 T3 GT-Pro Type 0.68
0.87
480 56 57 76.2 100 50 0.60 84 60 55 1JZ (VVTi) GT-Pro Type 0.68
0.87
GT3037 420 48 52.8 76.2 70 50 0.60 84 60 55 GT25 External - GT30 0.61
440 52 55 76.2 70 50 0.60 0.73
470 56 57 76.2 70 50 0.60 0.87
GT3037S 450 52 55 76.2 100 50 0.60 1.01
480 56 57 76.2 100 50 0.60 1.12
GT3040 500 50 58 82 100 60 0.70
GT3240 580 54 60.3 82 100 60 0.70 84 54 58.7 GT25 External - GT30 0.87