Fidanza Aluimum Flywheel 2012-2015 Honda Civic Si 2.4L (9lbs)Fidanza Performance lightweight aluminum flywheels free up extra horsepower and give you faster throttle response, quicker acceleration, better vehicle slowing and smoother, quicker shifting. So whether for everyday street use, autocross, time attack, drift or anywhere else you need fast transitional throttle response we deliver! Over 700 applications available; many SFI approved. Our flywheels also feature a replaceable friction surface to save you