| much much quicker revving increase in hp due to decrease in sprung weight (like lightweight crank pulley, rotors, etc.: engine does not have to work as hard to turn drivetrain) stock flywheel can warp/wear, causing your friction disc to wear quicker with rps segmented, no problems with cracking or warping with much abuse, before and after swap cons: revs drop much quicker, sometimes too quick price
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