Steel SFI 157 Tooth Fly- wheel- SBF Int Balance

The McLeod Steel SFI 157 Tooth Flywheel with Internal Balance is a high-performance replacement designed for small-block Ford applications requiring SFI 157 certification. Built from steel construction, this 157-tooth flywheel delivers the rotational mass and durability needed for street, strip, and dual-duty vehicles where clutch compatibility and engine braking characteristics matter. The internal balance design integrates counterweights directly into the flywheel body, eliminating external balance requirements and simplifying installation across various Ford small-block platforms.

At 26.26 pounds, this steel flywheel provides substantial rotating inertia compared to lightweight aluminum alternatives, resulting in smoother engagement off-idle and more predictable shift characteristics during acceleration. Steel construction offers superior heat dissipation and wear resistance against clutch material, extending component service life in high-mileage or high-duty-cycle applications. The 157-tooth ring gear mates with standard Ford starter motors, ensuring reliable cold-start engagement without modification. Balance weights are included, allowing final tuning for engine-specific configurations if needed during installation.

This flywheel serves small-block Ford owners upgrading from worn OEM units or transitioning between clutch systems. Street rebuilds, restorations, and performance applications benefit from the SFI 157 certification—a motorsports safety standard that confirms impact resistance and structural integrity. The internal balance configuration eliminates fitment concerns common with external-balance wheels, simplifying cross-platform engine swaps. Buyers should confirm their specific small-block Ford variant (windsor, cleveland, modified) and existing clutch setup prior to purchase to ensure proper engagement and clearance.