Key Stock - 1/4 x 1/4 x 2-7/8

The Key Stock - 1/4 x 1/4 x 2-7/8 from ATI Performance is a precision-engineered fastening component designed for serious engine builders and transmission specialists who demand reliability in high-performance automotive applications. This small but critical stock serves as a locating and retention element in drivetrain assemblies, securing components that transmit power and torque through your vehicle's mechanical systems.

Manufactured to strict tolerances by ATI Performance, this key stock features a 1/4-inch width and height with a 2-7/8-inch length, making it ideal for securing pulleys, gears, and shaft assemblies against rotational slip. The rectangular profile seats precisely into corresponding keyways, preventing circumferential movement while maintaining alignment under extreme load and vibration. ATI Performance's commitment to dimensional accuracy ensures zero play and consistent performance across thousands of engine cycles.

Professional mechanics and dedicated enthusiasts building stroker engines, installing aftermarket crankshafts, or upgrading transmissions will benefit from having OEM-quality key stock on hand. This component is essential for ensuring that your work meets professional standards and can withstand the rigors of high-performance applications.