The Garrett GTX4202R 55 Trim is a purpose-built drag race compressor wheel designed for competitors racing under a 76mm compressor wheel class limit. It delivers Garrett’s proven GTX-R ball bearing performance in a package engineered to keep drag racers legal while maximizing every millimeter the rulebook allows. This is the choice for teams running an existing GT42 platform who need class-legal power without reworking their turbine-side setup.

Specifications

• Compressor Wheel Trim: 55 Trim
• Compressor Wheel Inducer: 75.8 mm
• Compressor Wheel Exducer: 102.3 mm
• Bearing System: Garrett GTX-R Ball Bearing
• Turbine Housing: Not included — compatible with any GT42 series turbine housing
• Compressor Housing Style: Same as GT42
• Garrett P/N: 800269-2
• Alternate P/N: 800269-5002
• Alternate P/N: 800269-5002S

Performance & Application

This GTX4202R is engineered specifically for drag racing classes that cap compressor wheel size at 76mm, giving competitors the largest legal wheel available while staying within the rules. Because it shares the same compressor housing style as the standard GT42 and mates to any GT42 series turbine housing, it drops directly into an existing GT42 turbo setup without requiring a turbine housing swap. It’s built for racers who need to extract maximum class-legal airflow from a platform they’ve already invested in, without sacrificing external compatibility.

Compatibility & Fitment

• Turbine side mates to any GT42 series turbine housing
• Externally interchangeable with existing GT42 turbo setups
• Built to meet class requirements limited to a 76mm compressor wheel

Frequently Asked Questions

What size compressor wheel does the GTX4202R use?

It uses a special 55 Trim compressor wheel with a 75.8mm inducer and a 102.3mm exducer.

Does this turbo come with a turbine housing?

No, this is a housing-only design with no turbine housing included, and it will mate to any GT42 series turbine housing.

Can I use this with my existing GT42 turbo setup?

Yes, it is externally interchangeable with an existing GT42 turbo setup and shares the same compressor housing style as GT42.

Why is this wheel limited to 75.8mm/102.3mm dimensions?

This turbo is built to meet class requirements that limit competitors to a 76mm compressor wheel.

For drag racers running a GT42-based combination who need every legal advantage under a 76mm wheel rule, the GTX4202R 55 Trim delivers class-legal performance with true GT42 compatibility.