Buy cast iron imho. Reliability > Speed. I've been running a cast iron Metra on my Derbi for 2 years trouble free. I've run it wide open for long stretches without a second thought.
Buy cast iron imho. Reliability > Speed. I've been running a cast iron Metra on my Derbi for 2 years trouble free. I've run it wide open for long stretches without a second thought.
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