It's a Haibike allmtn 2.5 and the groupset is Deore M5100 11x1. The crank is labelled Haibike. There is no spec because Haibike refuse to tell me and there is nothing on the website for this model. The motor is a Yamaha PM-X2.without knowing the motor type or bike model it's impossible to give you a definitive answer but unless your bike has a hub motor it's highly unlikely to be a deore M5100 chainring as they have an asymetrical bolt patern to fit normal (not E bike) shimano cranksets. If it's a mid motor your chainring will be specific to the motors bolt patern or direct mount type.
If your chainring is 4 bolt measure your current chainrings bolt circle
and order any decent narrow wide or single ring 38t chainring in that bolt paternWolf Tooth - How to measure Bolt Circle Diameter (BCD)
Bolt Circle Diameter (BCD) is the diameter of the circle that goes through the center of all of the bolts on your chainring. On bicycle chainrings this dimension is usually measured in millimeters. It is critical to know the BCD of your crankset when you are selecting a new chainring for your bike.www.wolftoothcomponents.com
Try this one...it has BCD of 104....so measure yours to ensure a fit. The BCD is from the centre of one bolt to the centre of the other bolt diagonally opposite ..in mm.It's a Haibike allmtn 2.5 and the groupset is Deore M5100 11x1. The crank is labelled Haibike. There is no spec because Haibike refuse to tell me and there is nothing on the website for this model. The motor is a Yamaha PM-X2.
At first, I assumed the chainring would also be Deore, but when I looked on the Shimano website there was no M5100 38T.
I have asked Haibike, because none of the Italian dealers I have asked has responded, but if past experience is anything to go by they won't be very helpful.
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