umber of teeth: 36 -52 teeth (positive tooth thickness 3.6mmx21/negative tooth thickness 1.9mmx21)
Maximum diameter: 175mm
Maximum height: 19.5mm
Tooth pitch: 12.7mm
Threaded hole diameter: 5.2mm
Inner hole diameter: 41.2mm
Surface treatment: sandblasting + anodizing
Surface roughness: about 120 mesh
teeth：BBS01/02 :38T, 42T ,46T ,48T
Weight: 178g (BBS 42T)
Material: aluminum alloy
colour:Black
Package : 1PCS Chainring
FOR: BAFANG BBS01/BBS02 250W 750W / BBSHD M625 1000
The Bafang M625 motor is compatible with the BBSHD chainrings, not their range for BBS01/02 chain rings.all chainrings designed/listed for the Bafang BBSHD motor will also fit the M625.BAFANG BBS01/BBS02 Aluminum AL7075 BLING RING narrow wide tooth pattern chain wheel (compatible with 7 -12 speed chain)
Note: If you purchase a Chainring, please pay attention to the diameter of the Chainring and the distance between the frame to avoid the contact between the Chainring and the frame, which may cause installation failure. Thank you