SBM 7.30in Balancer Ext. Balance Non-SFI

The SBM 7.30in Balancer Ext. Balance Non-SFI harmonic balancer from Pro-Race Performance Products is purpose-built for serious small block Mopar engine builders and street performance enthusiasts who demand reliable crankshaft damping without SFI certification constraints. This external balance unit is engineered to absorb and dissipate harmful torsional vibrations that naturally occur during high-RPM operation, protecting your crank, bearings, and drivetrain from premature failure. Whether you're building a stroker, turbocharged small block, or naturally aspirated street engine, proper harmonic balancer selection is non-negotiable for longevity and consistent performance.

Constructed from cast iron and finished in natural (uncoated) form, the 7.30-inch outer diameter balancer provides optimal mass distribution and inertia characteristics specific to small block Mopar applications. The external balance design means counterweights are located on the outside of the balancer assembly, making it compatible with external balance crankshafts commonly found in modified and race-prepped small block Mopar engines. This configuration allows for precise weight matching to your crankshaft and rotating assembly, critical for minimizing vibration and maximizing bearing life at elevated RPMs where standard internal balance designs fall short.

This balancer suits engine builders, street rodders, and performance mechanics working on small block Mopar 273, 318, 340, and 360 platforms with external balance requirements. The non-SFI designation indicates this unit is designed for street and bracket racing applications where SFI certification is not mandated—ideal for Pro Street builds and dedicated track cars. Proper installation requires verification that your crankshaft, damper pulley, and timing cover are all matched to external balance specifications; mixing internal and external balance components will result in severe vibration and potential engine damage. Weighing 9.55 lbs, the balancer integrates seamlessly into traditional small block Mopar engine bays with standard front cover clearance.