The choice between an OEHD (Original Equipment Heavy Duty) Flywheel and a Chromoly Lightweight Flywheel depends on your driving style and performance goals. Our OEHD Flywheels are constructed from Ductile Iron, offering maximum durability, heat resistance, and longevity. This reinforced design maintains an OEM-like driving experience with smooth engagement, minimal noise, and increased resilience, making it ideal for daily drivers, street applications, and vehicles needing a reliable, heavy-duty replacement. In contrast, our Chromoly Lightweight Flywheels are engineered for performance-focused driving, significantly reducing rotational mass to allow faster revs, improved throttle response, and quicker acceleration. Made from high-strength chromoly steel, these flywheels are ideal for track use, spirited driving, and high-performance builds. While they enhance performance, they may lead to quicker clutch engagement and slight increases in drivetrain noise, which some drivers may notice in daily driving. If you prioritize smooth engagement, longevity, and durability, an OEHD Flywheel is the best choice. If you're looking for faster engine response and enhanced performance, a Chromoly Lightweight Flywheel is the way to go. Action Clutch offers both to match your specific driving needs.