Stillen 451350 Lightweight Aluminum Flywheel 03-07 Infiniti G35
In road racing, being able to match road-speed to engine speed is critical for fast shifting and ultimate mastery of the transmission. This is made far simpler by optimizing the weight of the flywheel.
These billet aluminum flywheels are typically just over half the weight of the stock iron unit. With the reduced weight, less power is needed to overcome flywheel inertia. The result is a quicker revving, more responsive motor.
A stock 350Z or G35 is equipped with a dual-mass OEM flywheel, which can dampen some harmonic vibrations from the transmission, at the expense of weight and reduced performance. An aluminum flywheel frees up that weight, for immediate performance gains, at the expense of some additional drivetrain noise, typically at low RPMs or at idle. This additional drivetrain noise is normal, and typical with any aluminum flywheel upgrade.