Flywheel Ultra Light GM LS 6 Bolt

The Flywheel Ultra Light GM LS 6 Bolt by UNICLUTCH is purpose-built for LS engine enthusiasts and performance builders who demand reduced rotational mass without compromising reliability. This lightweight flywheel is engineered specifically for the GM LS platform's six-bolt bellhousing pattern, making it an essential upgrade for anyone serious about engine responsiveness, quicker acceleration response, and improved fuel economy in street and track applications. Whether you're building a road-course competitor, daily-driven performance vehicle, or high-revving street engine, an ultra-light flywheel transforms how your LS motor feels and performs.

At just 16.05 pounds, this UNICLUTCH unit shaves significant rotational inertia compared to factory cast-iron designs, which typically weigh 28–35 pounds. The reduction in rotating mass allows your LS engine to accelerate faster from idle and reach peak RPM with minimal drivetrain lag, translating to sharper throttle response and improved shift quality when paired with a performance clutch. The six-bolt design ensures a positive mechanical lock with factory or custom LS bellhousings, while precision machining maintains strict runout tolerances to eliminate vibration and ensure smooth operation at sustained high engine speeds common in racing and boosted applications.

This flywheel is ideal for LS engine swaps, engine rebuilds, and performance upgrades where every pound matters. Installation requires matching it with an appropriate high-performance clutch assembly—a critical pairing, as the reduced inertia changes engagement characteristics and demands a clutch engineered for lighter flywheels to avoid chatter or premature wear. Compatibility spans all six-bolt LS variants (LS1, LS2, LS3, LS7, LSx crate engines), making it a versatile choice for street cars, race vehicles, and anyone upgrading from heavier OEM components to gain a tangible edge in acceleration and engine control.