Vintage BMX Bottom Bracket 3PC BMX-M 83-K Cr-Mo 1983 OG Old SChool BMX CRMO Vintage square taper 3pc bottom bracket kit for old school BMX bikes. Part type: square taper JIS bottom bracket spindle and hardware for BMX frames using traditional cup-and-cone bottom brackets. 83 stamped Material and construction: black Cr-Mo steel spindle with silver steel press-in cups, steel washers, and loose-ball bearing retainers. Vintage BMX cup-and-cone bottom bracket kit that appears lightly used. Only the parts shown in the pictures are included.
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