Shell Assy Steel 6.325 For 918911/918912

The Shell Assy Steel 6.325 for 918911/918912 is a precision-engineered transmission or drivetrain component manufactured by ATI Performance, a leader in high-performance automotive engineering. This steel shell assembly is purpose-built for serious enthusiasts and professional mechanics who demand reliability in demanding applications. Whether you're upgrading a performance transmission, reinforcing a heavy-duty drivetrain, or restoring a high-output vehicle, this component provides the structural integrity required to handle increased power and torque loads.

Constructed from quality steel, the Shell Assy Steel 6.325 weighs 8.205 lbs and measures 9.5 x 4 x 10 inches, making it a substantial, rigid component designed to withstand the stresses of high-performance driving. The 6.325-inch specification indicates precise dimensional tolerances critical for proper fitment and function within compatible transmission housings. ATI Performance's engineering expertise ensures this shell assembly maintains concentricity and durability under sustained load cycles, whether in drag racing, street performance, or heavy-towing scenarios. The steel construction resists deformation and provides superior heat dissipation compared to lighter materials.

This shell assembly is engineered specifically for compatibility with ATI transmission models 918911 and 918912, making it essential for anyone rebuilding or upgrading these units. Mechanics and performance builders rely on OEM-equivalent components like this to ensure proper gear spacing, synchronizer function, and overall drivetrain harmonics. Installation requires proper alignment during assembly and should be performed by qualified technicians familiar with transmission construction. For customers upgrading to higher-performance builds or addressing wear on existing transmissions, this component delivers the reliability needed for long-term durability and consistent power delivery.