Niner Biocentric II

Niner Biocentric II
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Niner's Biocentric II gives your singlespeed the adjustability you need to get the perfect chain tension and BB position. It eliminates the need for adjustable dropouts and brake adjustments when you swap to a different cog, and you can make gear changes quickly and easily with the turn of just two bolts. It's quiet and secure so you can focus on that long ribbon of trail ahead of you.