what are the strongest gear's I can buy?

BARRACUDA340S said

Is there any scientific proof to this or is this something like a spark plug debate? I need some strong gear's if I beef everything else up.

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FWIW, race gears are softer than street gears. The reason is the hard gears are needed for long term wear on the street and the soft gears will absorb shock better on a race car but at the expense of accelerated wear.