Steel SFI Flywheel - SBC 168 Tooth - Int. Balance

The Steel SFI Flywheel - SBC 168 Tooth - Int. Balance from PRW Industries is a purpose-built component for serious small block Chevy and V6 engine builders who demand reliability in high-stress applications. This internally balanced flywheel is engineered for circle track racing and street performance builds where consistent engagement, reduced vibration, and durability under extreme RPM conditions are non-negotiable. The 168-tooth design ensures reliable starter mesh and smooth power delivery, making it the preferred choice for competitors and enthusiasts tackling everything from bracket racing to endurance circuits.

Constructed from premium steel, this flywheel weighs 21.45 pounds and features internal balancing to work seamlessly with internally balanced crankshafts and harmonic dampers—a critical detail for eliminating parasitic vibration that degrades bearings and shortens engine life. The internal balance configuration means no external counterweights, simplifying installation and allowing tighter engine bay packaging in modified vehicles. SFI 1.1 certification guarantees that this component meets safety standards for racing applications, including containment verification and material integrity testing, giving you confidence during high-horsepower launches and sustained wide-open throttle operation.

This Steel SFI Flywheel excels in applications requiring rock-solid drivetrain components—competitive racing engines, restorations running modern internal balancing setups, and street performance builds targeting repeatability and longevity. It bolts directly to internally balanced small block Chevy and compatible V6 engines, provided your transmission input shaft and clutch system are sized for the 168-tooth count. Installation requires standard transmission and engine assembly procedures; verify crankshaft balance configuration before purchase to ensure full compatibility. For builders prioritizing durability over weight savings, this steel construction delivers unmatched reliability compared to lighter alternatives.