Garrett GTX5020R GEN II Turbocharger

Garrett GTX5020R GEN II Turbocharger

Overview

The Garrett GTX5020R GEN II Turbocharger represents a significant advancement in compressor wheel design and aerodynamics. Available in 76 mm, 80 mm, and 88 mm inducer diameters, the GEN II series delivers higher efficiency, faster spool, and increased power potential compared to the previous generation.

Compressor Wheel Design

The GEN II billet compressor wheel features a 120 mm exducer (an increase of 2 mm over GEN I) and offers:

• 9% more airflow

• 30% lower rotational inertia

• 20% reduction in mass

By reducing material in the hub and blades, Garrett has improved transient response and boosted efficiency. The lower inertia enables the turbo to reach boost faster, while the improved aerodynamics provide either more power at the same boost or the same power at lower boost levels.

Compressor Housing

• Larger 0.88 A/R compressor housing (up from 0.69 A/R in GEN I)

• Shared design with the GTX5533R (85 mm & 88 mm)

• Optimized volute for increased flow and power capacity

• Extended compressor dimensions:

  • +6 mm longer at compressor outlet

  • +10 mm longer at compressor inlet

• Outlet diameter: 107 mm (unchanged)

• Not outline-interchangeable with GEN I

Aerodynamics and Features

• 9% increase in overall airflow

• 76 mm, 80 mm, and 88 mm compressor options

• Lightweight billet backplate

• New backplate-to-housing O-ring for enhanced sealing

• Compatible only with new G Series speed sensors

  • Street Kit PN 781328-0003

  • Pro Kit PN 781328-0004

• Supports both GT and GTX turbine housings

• Super core and turbine housing sold separately

Performance Range

• Horsepower: 1075 – 2050 HP

• Engine Displacement: 2.8 L – 11.0 L

Key Benefits

• Larger compressor housing for higher power potential

• Faster boost response from reduced wheel mass and inertia

• Improved aerodynamic efficiency for lower boost requirements

• Seamless compatibility with Garrett G-Series accessories

• Designed for professional motorsport and high-output street applications