Tomei Subaru Impreza WRX / STI (94-07) EJ20/25 Single Scroll Ball Bearing BX7760 Turbocharger Kit with Billet Actuator

In the realm of bespoke automotive performance, the Tomei TB403A-SB01A stands as a paragon of engineering excellence. Designed for the Subaru WRX and WRX STI models equipped with the EJ20 and EJ25 engines, this multi-range billet actuator and turbocharger assembly epitomize the fusion of advanced technology and meticulous craftsmanship. Each component is engineered to enhance performance, ensuring that your supercar or hypercar delivers the exhilarating driving experience you demand.

Technical Specifications
Model Compatibility: Subaru WRX EJ20 Single Scroll (1994-2007), Subaru WRX STI EJ20 Single Scroll (2001-2007), Subaru WRX EJ25 Single Scroll (2002-2007), Subaru WRX STI EJ25 Single Scroll (2001-2007)
Target Horsepower: 38 HP
Bearing Type: Ball Bearing
Initial Boost Setting: 1 Kgf/cm2
Compressor Wheel:
Inducer Diameter: 52 mm
Exducer Diameter: 68 mm
Trim: 6
Blade Count: 6
Material: Aerospace-grade A261
Production Method: CNC Billet
Turbine Wheel:
Inducer Diameter: 56 mm
Exducer Diameter: 49 mm
Trim: 7
Material: K41
Production Method: Cast
Compressor Housing:
Inducer Diameter: 53 mm
Exducer Diameter: 41.6 mm
A/R: 0.78
Turbine Housing:
Inducer Diameter: 45 mm
Exducer Diameter: E
A/R: 0.57

Design & Engineering Excellence
The TB403A-SB01A features a large capacity multi-rate billet actuator, crafted from reinforced forged billet material. This robust construction not only enhances durability but also facilitates precise boost adjustments through its innovative design, allowing for the combination of up to three of the six included springs to achieve your desired setup. The swivel-type nipple further enhances the routing of hoses, providing flexibility and ease during installation.

At the heart of this assembly lies the newly designed billet compressor wheel, machined from aerospace-grade materials. This lightweight component boasts thinner blades and an expanded surface area, resulting in significant improvements in airflow and turbo spool characteristics. The meticulous attention to detail in the machining process ensures that each wheel meets the exacting tolerances required for high-performance applications.