Unorthodox Racing Flywheel Friction Insert (Heat Shields)
We get a lot of questions about our new “black” inserts. Unorthodox Racing is the first to bring this kind of innovation to market. These inserts are made from a high grade steel, but they utilize a unique ferritic nitrocarburizing process that hardens the steel to protect it against aggressive ceramic clutches.
The result? A surface more durable than a cast iron OEM or chrome-moly flywheel! It also will not rust and is resistant to metallic friction materials seizing against the flywheel.
This method has proven to work better than just using harder steel because it keeps the coefficient of friction high, which is what all clutches like! Harder steels (such as 1050) have a much lower coefficient of friction.
Another important factor is the way we machine them. All inserts are CNC-machined, not quickly ground like most aftermarket units, providing a surface that is parallel to within .001”! As a result, extended periods of clutch break-in are not required.
PLEASE NOTE: THESE ARE REPLACEMENT INSERTS FOR MAINTAINING YOUR EXISTING UNORTHODOX FLYWHEEL
