SURRON LIGHT BEE X LBX LB1e JACK / MID SHAFT – Factory original OEM part. This is the primary drive pulley part which uses the drive belts as per when the bike was supplied new. If you have converted your Light Bee to a chain primary drive, then you will just need to swap over your mid shaft sprocket before you re-assemble the mid shaft back in to your Light Bee.
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