To mount different standard chainrings
The 130 mm Narrow Wide chainring for the Bafang BBSHD with 40, 42 or 44 teeth and changeable chainrings. The motor is less stressed by the higher RPM. The spider is made from aluminium, the chainrings material is steel.
Superb for mountainous regions where the original chainring of the 46T Bafang is too large. The chainline is a bit more outside than the standard chainring, because of the screws. See also the PDF in the download area.
It offers an offset inwards of 7-8 mm, ideal when the swingarm is too wide and the chainring is grinding on it. Optionally, the chainring can also be moved inwards by a few millimeter with spacers and longer chainring screws. Also a different chainring with 130 mm 5 arm can be mounted. Chainrings are available from e.g. Gebhardt Classic with 38 to 66 teeth. Alternatively, an additional chainring or chain guard can also be attached to the outside.
The weight is about 368 grams (42T) and saves more than 200 grams of weight to the standard steel chainring. The inner hole has a diameter of about 41 mm, the bolt circle of the chainring bolts has about 52 mm.
Does not fit for BBS01 or BBS02. You can use this product.