Why are underdrive pulleys so much more expensive than OEM pulleys? Smaller production volume? Lightweight, hi-tech materials? An underdrive pulley is smaller, so it requires less material, and so would be cheaper and lighter.
Just my common sense.
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e·co·mod·ding: the art of turning vehicles into what they should be
What matters is where you're going, not how fast.
"... we humans tend to screw up everything that's good enough as it is...or everything that we're attracted to, we love to go and defile it." - Chris Cornell
[Old] Piwoslaw's Peugeot 307sw modding thread
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