Maxboost00

Is usuallly better to go with a steel or aluminum flywheel and why.

2000EM1

lighter is generally better, depending on who you ask.

But the steel is going to last longer.

Archidictus

Steel is stronger and unless you're a professional drag or road-racer, you probably don't need a lighter flywheel in the first place. Thoroughly consider your application before dropping money on mods you may not gain much from.