The Garrett GT28RS delivers dual ball bearing performance in a compact package built for enthusiasts who demand the fastest possible spool-up on small displacement engines. Whether you’re building a high-strung four-cylinder for autocross or a responsive daily street setup, this turbo is engineered to deliver power without the lag. It’s the choice for drivers who value throttle response as much as top-end capability.

Specifications

• Compressor Wheel Inducer: 47 mm
• Compressor Wheel Exducer: 60 mm
• Compressor Wheel Trim: 62
• Turbine Wheel Inducer: 54 mm
• Turbine Wheel Exducer: 47 mm
• Turbine Wheel Trim: 76 trim
• A/R Ratio: .86
• Turbine Housing Flange: T25, 5 Bolt
• Wastegate: Internal, 1 BAR Actuator
• Bearing Type: Dual Ball Bearing
• HP Capacity: Approximately 350 HP
• Also Known As: GT2860RS

Performance & Application

The GT28RS is purpose-built for small displacement engines up to 2.2L, making it an ideal match for compact turbo platforms seeking maximum responsiveness. Its dual ball bearing design delivers the ultimate spool-up time compared to other units in its class, translating to sharper throttle response and reduced turbo lag. This turbo is best suited for builds where quick transient response matters as much as outright power, such as autocross, time attack, or spirited street driving. With a flow capacity of about 350HP, it strikes a balance between quick spool and meaningful power delivery for its intended engine size.

Frequently Asked Questions

What does GT28RS refer to?

The GT28RS is also known as the GT2860RS — both names refer to the same Garrett turbocharger.

What HP can the GT28RS support?

The GT28RS has a flow capacity of about 350HP.

Is this a ball bearing or journal bearing turbo?

The GT28RS is a dual ball bearing turbocharger.

What is the A/R ratio and turbine housing configuration?

The GT28RS features a .86 A/R T25 5 bolt internal wastegate turbine housing with a 1 bar actuator.

For builders who need serious spool-up speed on engines up to 2.2L without sacrificing top-end capability, the Garrett GT28RS delivers proven dual ball bearing performance backed by a well-established turbine and compressor configuration.