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Ships within 48 hours · Estimated delivery Aug 6 - Aug 11
the Siren can be inflated up to 100PSI for ultra-low rolling resistance on smooth surface riding
This BB is designed to be used with old school 1 piece cranks that have a 24 tpi and frames that have a classic American Shell
accurate and features permanent measurement markings
Size: 12-1/2" x 2-1/4" /12
6mm (1-1/8")
BlackOps 25t Micro Drive BMX Sprocket / Chainwheel - Black/Silver LHD the Siren can be inflatedThe Black Ops Micro Drive Sprocket is CNC machined from 6061 T6 aluminum. It is designed for use with 1 8" chains. The sprocket has a 15 16" (23. 8mm) bore (compatible with 1 piece cranks) and includes adapters for 19mm and 22mm 3 piece cranks. Size: 25T Color: Black