FTI Performance F4042 TH400 Pro-Mod Billet Aluminum Direct Drum Kit

FTI Performance F4042 TH400 Pro-Mod Billet Aluminum Direct Drum Kit

Billet Aluminum | 36-Element Sprag | Complete Intermediate Clutch Kit

The FTI Performance F4042 TH400 Pro-Mod Billet Aluminum Direct Drum Kit is engineered for high-horsepower, Pro-Mod, and extreme racing TH400 transmissions. Designed to withstand severe shock loads and extreme RPM, this kit replaces the factory direct drum with a lightweight, high-strength billet aluminum drum paired with a 36-element Pro-Mod sprag for maximum holding power and durability.

This is a complete direct drum upgrade kit, including high-carbon intermediate clutches, steels, and a custom thin pressure plate—making it ideal for drag racing, boosted, nitrous, and high-RPM competition builds where reliability is critical.

Direct Drum Kit Highlights

• Billet Aluminum Pro-Mod Direct Drum – Stronger and lighter than OEM

• 36-Element Pro-Mod Sprag – Maximum holding power and reliability

• High-Carbon Intermediate Clutches – Designed for extreme heat and load

• Complete Kit – No piecing together parts

• Race-Only Design – Built for severe duty TH400 applications

Kit Contents

• Billet aluminum Pro-Mod direct drum

• 36-element Pro-Mod sprag

• (5) High-carbon intermediate clutches

• (5) Intermediate steels

• Custom thin intermediate pressure plate

Technical Specifications

• Transmission Compatibility: GM TH400 / Turbo 400

• Drum Material: Billet Aluminum

• Sprag Type: 36-Element Pro-Mod

• Application: Racing / Competition

• Intermediate Clutches Included: Yes

• Intermediate Steels Included: Yes

Vehicle & Transmission Fitment

Transmission-Based Fitment:

• GM TH400 / Turbo 400 Automatic Transmissions

Intended Use:

• Pro-Mod racing

• Drag racing

• High-boost turbo or supercharged builds

• Nitrous and extreme horsepower applications

Why Choose FTI Performance?

FTI Performance is a leader in Turbo 400 racing transmission components, supplying championship-level parts trusted by professional racers worldwide. Their Pro-Mod internal components are engineered to handle extreme torque, RPM, and abuse without compromise.