Garrett CHRA: GT2859R Special P/N: 446179-5065S

The Garrett GT2859R Special CHRA is a purpose-built core assembly engineered for enthusiasts chasing serious top-end power without sacrificing spool characteristics. This ball bearing center section is ideal for tuners building high-boost setups on popular compact and sport compact platforms. If you’re looking for a proven, durable core to anchor a high-output turbo build, this is the assembly to trust.

Specifications

• Compressor Wheel Size: 56mm
• Turbine Wheel Size: 52mm
• Bearing Type: Ball Bearing
• HP Capacity: 400+ hp
• Flange Type: T25/T28
• Garrett P/N: 446179-5065S
• Also Known As: GT2859R Special

Performance & Application

This CHRA is designed for high-boost applications where rapid spool and sustained durability under load are non-negotiable. The ball bearing center section reduces spool lag compared to traditional journal bearing designs, making it a strong choice for builds that demand quick throttle response along with the ability to support elevated horsepower targets. It’s a solid foundation for tuners upgrading from stock turbo internals who need a core capable of handling aggressive boost levels. The T25/T28 flange compatibility makes it a natural fit for popular engine platforms already running these turbo footprints.

Frequently Asked Questions

What HP can the GT2859R Special CHRA support?

This core assembly is designed for high-boost applications supporting up to 400+ hp.

Is this a ball bearing or journal bearing CHRA?

The GT2859R Special features a ball bearing center section, delivering rapid spool and durability.

What flange does this CHRA use?

It fits T25/T28 flanges, making it compatible with popular engine platforms using this configuration.

What does “GT2859R Special” refer to?

GT2859R Special refers to this specific CHRA core assembly, which pairs a 56mm compressor wheel with a 52mm turbine wheel under Garrett P/N 446179-5065S.

For builders who need a ball bearing core capable of handling serious boost while maintaining quick spool, the GT2859R Special CHRA delivers the performance and reliability your high-output build demands.