HD Billet Flexplate - SFI SBF 164 Tooth Int.

The HD Billet Flexplate – SFI SBF 164 Tooth Int. by MEZIERE is engineered for builders and performance enthusiasts who demand maximum durability and precision in their engine's drivetrain foundation. A flexplate serves as the critical interface between your engine's crankshaft and torque converter, absorbing shock loads and transmitting power to your transmission. Whether you're building a street machine, bracket racer, or high-output street-strip hybrid, this billet flexplate is designed to handle sustained abuse that cast alternatives simply cannot withstand, making it essential for any serious Small Block Ford platform upgrade.

Machined from true billet steel rather than cast iron, this flexplate eliminates the porosity and stress-concentration defects inherent in casting processes, resulting in superior strength-to-weight characteristics. The 164-tooth design is optimized for small block Ford applications with a 6-bolt crank interface, providing positive engagement with your starter motor while maintaining SFI 29.2 safety certification for competition use. Internal balance configuration means the rotating assembly weight distribution is already factored into the component, allowing seamless installation without secondary balancing. The 9.47-pound construction delivers the rigidity needed to prevent flex and harmonics that degrade power delivery and transmission longevity under high-torque conditions.

This flexplate is ideal for dedicated racers, engine builders, and hot rodders running naturally aspirated or boosted small block Ford engines who prioritize reliability over cost. Its SFI certification makes it mandatory equipment for sanctioned drag racing, road racing, and bracket racing events where cast components face restrictions or outright prohibitions. Installation is straightforward for anyone with basic mechanical skills and a torque wrench—simply bolt it to your internally balanced crankshaft in place of the factory unit. Compatibility extends across small block Ford platforms (221, 250, 289, 302, 331, 347, 408 cubic inch variants) that utilize 6-bolt crank patterns and 164-tooth starter ring gears.