This Exedy lightweight flywheel is a must - have for Subaru enthusiasts. It's great for both racing and street driving. Whether you're participating in drag racing, autocross, or just cruising around town, this flywheel will enhance your driving experience. The target users are Subaru owners who want to improve their vehicle's performance. It's made from solid one - piece billet chromoly steel or chromoly steel forgings, designed to reduce weight and inertia. This flywheel has passed engineering tests up to 15,000 - 18,000 RPM and is SFI approved, offering a reliable and high - performance solution for your Subaru.