Spec Clutch SC40S-SS Spec Steel Flywheel

The Spec Clutch SC40S-SS Spec Steel Flywheel is a high-performance replacement flywheel engineered for enthusiasts and racers who demand consistent clutch engagement and improved drivetrain response. Manufactured by Spec Clutch — a leading name in performance clutch and flywheel systems — this steel flywheel is designed to pair seamlessly with Spec clutch kits for maximum compatibility and performance.

Unlike lightweight aluminum flywheels, the Spec Steel Flywheel retains more rotational mass, delivering smoother, more predictable clutch engagement and improved drivability — making it an excellent choice for street-driven performance vehicles and road racing applications where consistency matters.

Key Features:

• Precision-machined steel construction for durability and long service life
• Designed to work optimally with Spec clutch disc and pressure plate assemblies
• Provides consistent heat dissipation during repeated clutch engagement cycles
• Resurfaceable friction surface extends the usable life of the flywheel
• OEM-style bolt pattern for straightforward installation
• Balanced from the factory for smooth, vibration-free operation
• Meets or exceeds OEM replacement standards

The Spec SC40S-SS Steel Flywheel is a reliable, performance-oriented upgrade for drivers looking to complement their Spec clutch system with a purpose-built flywheel that handles the demands of spirited street driving and competitive motorsport use.