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LS1 Billet Chromoly Lightweight Flywheel


Looking for a strong, lightweight flywheel option? Unlike an aluminum flywheel, the Ls1 billet Chromoly lightweight flywheel is made of 4140 one-piece billet chromoly steel and is compatible with both standard and aftermarket single-disc clutches like the stock LS1/LS6 clutch assemblies.

Total weight is 15lbs 7oz.

The ring gear teeth are milled onto the flywheel, unlike an aluminum flywheel where the ring gear is pressed onto the flywheel which has the possibility of separating from the flywheel. The 4140 alloy billet steel is designed to withstand wear, pressure, and damage in high-heat applications such as road racing.

Is it worth investing in a lighter flywheel?

You’ll notice right away that the engine revs faster with a lightweight flywheel. Instead of having your engine’s horsepower robbed via parasitic losses, you free it up and transmit more power to the wheels.


The whole reason to go billet (which means it was machined from a solid chunk of high-grade alloy is to be able to handle the heat generated by the friction material of an aftermarket clutch disc. It’s not possible for a billet flywheel to crack, even if it gets really hot.

The LS1 billet Chromoly lightweight flywheel is made for mild to high-tuned racing automobiles that compete in drag races, autocross, street racing, and rally events. Our lightweight chromoly flywheels have three benefits; low weight, low inertia, and high thermal capacity.

The Advantages of Lightweight Flywheels

Frequently, folks will replace their clutch and flywheel at the same time. If you need to replace your clutch but aren’t sure whether to go with a lightweight flywheel, this list of benefits and drawbacks may help you decide.

Pros: Faster Acceleration + More Power to the Wheels

This is the primary reason why people opt for lightweight flywheels. The engine will accelerate a little faster than usual since the lower mass spins more freely. People that track their vehicles will notice a significant difference. Less power loss means more power to the wheels.

Cons: Harder to drive

One of the main reasons big automakers make their OEM flywheels fairly heavy is because a heavy flywheel has more inertia and is, therefore, is easier to drive.

Depending on your current setup, upgrading your flywheel can have other benefits as well, such as less heat, longer clutch life, and faster launches.

Fits 4.8/5.3/5.7/6.0/6.2/7.0 6-bolt crank pattern


Need Help Deciding?
SKU: 46LS1A Category:
Product Warranty
Weight16 lbs
Dimensions15 × 15 × 4 in


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