This is the BBS01/02 chainwheel only. It is include the plastic cover or fixing bolts. These can be fitted to any BBS01/02 kit, but you should consider the resultant gearing when changing this part.
Compatible with all Bafang MID Drives BBS01 36V 250/350,48V 350W,BBS02 36V 500W,48V 500/750W
Easy installation
Packing list:
1 pcs 44T or 46T or 48T or 52T Chain Wheel with plastic cover