The Garrett GTW3884R 64MM Ball Bearing SuperCore is a purpose-built center section engineered for enthusiasts and builders chasing serious top-end power without sacrificing the ball bearing responsiveness that defines the GTW Series. Sold without a turbine housing, this SuperCore gives tuners the flexibility to select the exact housing configuration their application demands. It’s the ideal foundation for high-horsepower builds looking to upgrade from the popular 6766-class turbo platform.
Specifications
- Compressor Wheel Inducer: 64.3mm
- Compressor Wheel Exducer: 84.4mm
- Compressor Wheel Trim: 58
- Turbine Wheel Inducer: 74.2mm
- Turbine Wheel Exducer: 64.6mm
- Turbine Wheel Trim: 76
- Bearing Type: Ball Bearing
- Compressor Housing Frame: T04S
- Compressor Inlet: 4″
- Compressor Outlet: 2.5″
- Anti-Surge: Built-in & machined
- HP Potential: 900 HP potential flow
- Configuration: Turbo without turbine housing (SuperCore)
- Garrett P/N: 841691-5004S
- Also Known As: GTW6465R, GTW6765R
Performance & Application
The GTW3884R 64MM SuperCore is Garrett’s performance answer to the widely used 6766-size turbo, delivering comparable flow potential with the added benefit of ball bearing technology for quicker spool and sharper throttle response. With a 900 HP potential flow rating, this SuperCore is built for high-output engine combinations where both durability and top-end power matter. The T04S compressor housing, complete with a 4-inch inlet and machined anti-surge feature, is engineered to maximize flow efficiency while resisting compressor surge under aggressive boost conditions. Because the turbine housing is sold separately, builders can tailor exhaust-side characteristics to match their specific power goals and vehicle platform.
Frequently Asked Questions
- What HP can the GTW3884R 64MM SuperCore support?
- This SuperCore has a 900 HP potential flow rating.
- Is this a ball bearing or journal bearing turbo?
- The GTW3884R 64MM SuperCore uses ball bearing technology.
- Does this SuperCore include a turbine housing?
- No, this product is a turbo without turbine housing (SuperCore), so the turbine housing is sold separately.
- What do GTW6465R and GTW6765R refer to?
- These are alternate names (aliases) used to reference the Garrett GTW3884R 64MM Ball Bearing SuperCore, Garrett P/N 841691-5004S.
For builders seeking a proven upgrade path from the 6766-class turbo with the added responsiveness of ball bearing performance, the Garrett GTW3884R 64MM SuperCore delivers the flow capacity and engineering pedigree to support serious horsepower goals.
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