Small chain ring onto a bmx bike

Is it possible to put a small chainring on a normal 3 peice crank or do I need a new crank

Answer #1

Measure the bolt circle of your current 3 piece crank. The size of your crank spider will determine the smallest chainring you can fit.

The trials bikes I saw with tiny chanrings all had very long one piece cranks.

Answer #2

yes it will fit

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