The Drag Race GT4718R is a purpose-built compressor cartridge engineered for class-legal drag racing applications where an 88mm compressor wheel limit is enforced. It’s designed for racers who need to stay within strict class restrictions without sacrificing the performance envelope of the proven GT47 platform. This core-only unit gives builders the flexibility to pair it with the turbine housing of their choice while maintaining full compatibility with existing GT47 hardware.

Specifications

• Compressor Wheel Trim: 56 Trim
• Compressor Wheel Inducer: 87.8 mm
• Compressor Wheel Exducer: 118 mm
• Turbine Housing: Not included (sold without turbine housing)
• Garrett P/N: 775839-2
• Alternate P/N: 775839-5002
• Alternate P/N: 775839-5002s

Performance & Application

This GT4718R is built specifically to meet class requirements that restrict compressor wheels to 88mm, making it the go-to choice for drag racers competing under those limits. Despite the smaller inducer diameter, it retains the same compressor housing style as the standard GT47, preserving the mounting and plumbing setup racers are already familiar with. The turbine side is designed to mate to any GT47 series turbine housing, giving builders full control over turbine sizing to match their specific power and spool characteristics. Because it’s externally interchangeable with an existing GT47 turbo setup, it’s an ideal upgrade path for teams looking to stay within class rules without reworking their entire turbo system.

Compatibility & Fitment

• Compatible with any GT47 series turbine housing
• Externally interchangeable with existing GT47 turbo setups

Frequently Asked Questions

Does this turbo include a turbine housing?

No, this GT4718R is sold without a turbine housing.

What turbine housings will fit this turbo?

The turbine side of this turbo will mate to any GT47 series turbine housing.

Why does this turbo use an 87.8mm inducer instead of a larger compressor wheel?

This turbo is built to meet class requirements that are limited to an 88mm compressor wheel.

Can this replace an existing GT47 turbo without changing other components?

Yes, it is externally interchangeable with an existing GT47 turbo setup and uses the same compressor housing style as the GT47.

For drag racers who need to meet strict 88mm compressor class rules without giving up GT47 platform compatibility, the Drag Race GT4718R delivers exactly the engineered solution the rulebook demands.