The h1-71 needle is the richer of the 2. I hope you don't plan on using either of those jets in an 01' with a stock nozzle jet . If so, It'll be so rich the bike will be hard to ride.
no im using it in a 02 cr250. i have been running a h2-72 but need a 1/2 size richer. i just wasnt sure if 01 jets got richer with smaller #. am i correct that the h1-71 is a 1/2 step richer
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