Cusco Lightweight Flywheel Subaru BRZ / Scion FR-S 2012-2015

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The first lightweight flywheel with absolutely zero rotational fluctuation. This was made possible by an innovative dimensional design combined with a special manufacturing technique. The Toyota 86 and Subaru BRZ currently serves a popular foundation to tune and race. The FR configured Horizontally Opposed FA20 engine is the key aspects of what makes this vehicle enjoyable to drive.

A lightened flywheel modification is best known to be used when tuning a naturally aspirated engine. By applying a lightened mass to the crankshaft axis, the energy required to start the rotational inertia is greatly decreased. Factory flywheels are designed to smooth out the revolutions of the engine and stabilize engine idle by applying weight to the mass, solely to cater to the general consumer market.


  • Weight: 4.8kg (w/ 3 knockpins) (Factory = 9.34kg)
  • Rotational Inertia: 526.8kgfcm² (Factory = 1242.6kgfcm²)
  • Material: SCM435H Chromium Molybdenum


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