I've always found the speedo to be the thing you least want to cheap out on. Cheap speedo's will blow, even running 27t motors on speedos with 15t limits i've seen go up in smoke endless amounts of times.
A lot of beginners I find fall into this circle of buying cheap gear then blowing it and replacing it with more cheap gear. By the time they catch on that they should just buy good gear to start out with they have paid more than the cost that the good gear would of been initially.
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