Quote:
Originally Posted by mrg666
So, are lightweight pulleys nonsense or helpful? I was wondering ...
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everything but the crank pulley is safe to lighten to an extent. it takes power to move weight. it wont drop much weight so it wont free up much power.
If you're trying to find another .5hp at 7000 rpm, it might be worth your while just like a grams 70mm TB might be worthwhile for you but then you're looking at weight savings like the HKS Serpentine belt that they claim is 17% lighter than stock.