The GTX4202R Special 49 Trim is a purpose-built drag race compressor engineered for competitors racing under strict 72mm compressor wheel class rules. Supplied without a turbine housing, it gives serious drag racing teams the freedom to pair Garrett’s proven GTX42 series compressor technology with the exact turbine housing their build already runs. This is a component for experienced engine builders and race teams who need class-legal compressor performance without sacrificing compatibility with existing GT42 hardware.

Specifications

• Compressor Wheel Inducer: 71.8mm
• Compressor Wheel Exducer: 102.3mm
• Compressor Wheel Trim: Special 49 Trim
• Turbine Housing: Not included (NO TURBINE HOUSING)
• Compressor Housing Style: Same as GT42, externally interchangeable with existing GT42 turbo setup
• Turbine Side Compatibility: Mates to any GT42 series turbine housing
• Garrett P/N: 800269-5007S
• Alternate P/N: 800269-7
• Alternate P/N: 451888-0050

Performance & Application

This GTX4202R is built to meet class requirements that limit competitors to a 72mm compressor wheel, making it a direct fit for drag racers competing in wheel-restricted classes. Because the turbine side mates to any GT42 series turbine housing, teams can retain their proven turbine-side configuration while upgrading to this class-legal compressor wheel. Its shared compressor housing style with the GT42 also means it drops into existing GT42 turbo setups without requiring a full system redesign. This flexibility makes it a strategic choice for racers who need to stay within class rules while maximizing the performance of their current GT42-based turbo system.

Frequently Asked Questions

Why does this GTX4202R have no turbine housing?

It is supplied without a turbine housing so it can be mated to any GT42 series turbine housing, giving racers flexibility to use their existing setup.

What class requirement is this compressor wheel designed to meet?

It’s built to meet class requirements limited to a 72mm compressor wheel, with a 71.8mm inducer and 102.3mm exducer.

Will this fit my existing GT42 turbo setup?

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

What turbine housings can this be used with?

The turbine side of this turbo will mate to any GT42 series turbine housing.

For drag racers locked into a 72mm compressor wheel class limit, this GTX4202R Special 49 Trim delivers class-legal compliance without forcing a compromise on GT42-based turbine hardware.