Speedmaster GM TH400 Forward Clutch and Direct Clutch Assembly with Carbon Fiber Clutches Racing PCE623.1019.02

This Speedmaster PCE623.1019.02 is a GM TH400 forward clutch and direct clutch assembly engineered for racing and high-performance transmission builds. The assembly features carbon fiber clutches, which offer reduced weight and improved response characteristics over traditional materials — a key advantage in competitive and performance driving contexts. The TH400 transmission is renowned for its strength and durability, and this replacement clutch assembly is designed to restore or upgrade the transmission's capability for sustained power delivery and rapid gear transitions.

This clutch assembly is intended for use by transmission builders, drag racing teams, street rod enthusiasts, and other serious automotive builders working on TH400 transmissions. The carbon fiber construction represents a modern upgrade path for those seeking performance gains in clutch engagement and wear characteristics. Installation requires technical transmission knowledge and proper tools; this is a component-level part suited to experienced mechanics or professional transmission shops.

Key Features & Benefits

• Carbon Fiber Clutches: Engineered with carbon fiber materials to reduce weight and improve engagement response for racing applications.
• GM TH400 Fitment: Direct replacement forward and direct clutch assembly for Turbo 400 transmissions.
• Racing-Grade Design: Purpose-built assembly for high-performance and competitive racing transmission builds.
• Complete Assembly: Includes both forward and direct clutch components in a single unit for convenient installation.

Specifications

Ideal Applications

• Drag racing transmission builds and upgrades
• Street rod and hot rod TH400 transmission performance modifications
• Professional transmission shop rebuilds for high-performance vehicles
• Racing engine platform assembly and restoration