🔥 S400 93mm Turbine Wheel Upgrade with T4 1.00 A/R Exhaust Housing – Max Out T4 Performance Before Going T6

Looking to get every ounce of performance out of your S400 turbocharger before stepping up to a T6 setup? This upgrade is your solution. Featuring the largest turbine wheel that comfortably fits inside a T4 housing, the 93mm turbine offers near T6-level performance while retaining the compact packaging and drivability benefits of a T4 system.

This combo comes paired with a T4 1.00 A/R twin-scroll exhaust housing—optimized for maximum efficiency, quick spool, and long-term reliability in high-performance diesel and racing applications.

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🔧 Key Features:

• Turbine Wheel Size: 93mm – largest available for T4-fit S400 setups

• Exhaust Housing: T4 1.00 A/R divided (twin-scroll)

• Comparable flow and efficiency to 96mm wheels typically requiring T6 housings

• Ideal for high-horsepower single or compound turbo applications

• Provides excellent drivability without compromising top-end performance

• Cast iron housing built to withstand extreme heat and boost levels

• Perfect for maximizing S400 power while keeping your T4 footprint

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📦 What’s Included:

• 1x 93mm Turbine Wheel (S400 Fitment)

• 1x T4 1.00 A/R Divided Exhaust Housing

🚫 Note: Turbine seal is not included. Please reuse your original turbine seal or source one separately.

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This upgrade bridges the gap between T4 responsiveness and T6 performance—ideal for drivers who want more flow without stepping up to a larger frame.

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