Please select your color
![]()
Overview
Premium short Miranda crank arms for eBikes using the Bafang Ultra M620 motor that replace the stock 170mm cranks. Ships with crank bolts.
- 150mm length
- 35mm offset
- 2 per set
Technical Specifications
Length (hole to hole)
150mm
Offset
35mm
Splines
ISIS Drive
Material
Aluminum Alloy
Crank Arm Bolts
Two Included
Color
Black
Compatibility
| Bike Name | Compatible |
|---|---|
| eBikes with Bafang Ultra M620 Motors | |
| eBikes with Bafang BBS02/BBSHD Motors | |
| eBikes with Rear-Hub Motors |
Need A Hand?
Customer Reviews
Based on 16 reviews
88%
(14)
0%
(0)
6%
(1)
0%
(0)
6%
(1)
D
Quality parts, lightning fast shipping! What more can you ask for! These arms were a great upgrade for my Bafang m610 motor eBike!
J
Had to purchase a replacement set because one got bent due to a mishap.
Great length and less prone to pedal strikes they say.
However, Biktrix support (as good and responsive as they are) needs to NOT send a universal style puller to change these out.
It absolutely will not work on these arms and the Bafang ISIS setup!
Please stock and sell -OR- recommend the Park Tool CWP-7, it works like a charm! It has 2 interchangeable tips that go on the extruder bolt,
whereas the universal tip is much too small and doesn't press up against anything, as the spline is hollow. And the video link to lay the bike on it's side to help the universal do the job is unprofessional and an unacceptable way to do the job.
Biktrix universal on the left, Park Tool CWP-7 on the right. Happy e-Biking!
C
I really like these cranks! No pedal strike and less ghost peddling for my Bafang Ultra ebike.
B
These shorter crank arms for my BAFANG 620 motor arm perfect. No more pedal strikes. I can tell that the push force in the pedal is less, but I think the savings $ on pedals will pay off. Plus with a sprocket and cassette change in the gearing these new cranks are just right.
C
I ordered new cranks and peddles for my Juggernaut FS Ultra. I ordered directly from the website. The new cranks appear to be about 1/2” shorter than the the ones i am replacing. Biktrix has been very good about everything i have ordered, I don’t know what went wrong here.