SBF 28oz Ext Balance SFI Flexplate 157 Tooth

The SBF 28oz Ext Balance SFI Flexplate 157 Tooth is a precision-engineered flexplate designed for small-block Ford V8 engines running modern ignition systems and high-performance builds. Built to SFI 29.1 safety standards, this flexplate bridges your engine's crankshaft and torque converter, absorbing vibration while transmitting power with minimal harmonics. Whether you're building a street machine, race car, or restoring a classic Ford, this component ensures reliable torque delivery and protects downstream drivetrain components from shock loads.

Constructed from heavy-duty steel with 28 oz external balance specifications, the SBF 28oz Ext Balance SFI Flexplate 157 Tooth mounts to a standard 10.5 in bolt circle and features 157 teeth for reliable starter engagement across the entire rotation. The external balance design means this flexplate is pre-weighted to match your specific rotating assembly—critical when pairing with externally balanced crankshafts and dampers. SFI 29.1 certification guarantees this part meets professional safety standards, making it acceptable for competition use and high-horsepower applications where component failure could be catastrophic.

Mechanics and engine builders rely on this flexplate for any serious Ford V8 project requiring balanced rotating assemblies—from street performance to bracket racing. Installation requires the correct torque sequence and proper alignment with your converter and damper to maintain balance integrity. Verify your engine's balance specification (external versus internal) before ordering; pairing an externally balanced flexplate with an internally balanced crank will introduce severe vibration and premature wear. Weighing 6.29 lbs and engineered for dependable service, this SFI-certified component is essential for builds where reliability and safety standards matter.