Competition Clutch Lightweight Steel Flywheels (ST suffix) are recommended for naturally aspirated and/or street-driven applications. This flywheel preserves low-end torque and driveability. Well-suited for Stage 1 and Stage 2 clutch applications. Made of 4140 forged steel and are a one-piece design. Not all applications have the ST and STU versions available. Flywheel weights vary from 8lbs to 18lbs depending on application.
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This Part Fits:

Year	Make	Model	Submodel
2016-2018	Mazda	MX-5 Miata	Club
2016-2018	Mazda	MX-5 Miata	Grand Touring
2017-2018	Mazda	MX-5 Miata	RF Club
2017-2018	Mazda	MX-5 Miata	RF Grand Touring
2016-2018	Mazda	MX-5 Miata	Sport