The nylon primary reduction gear is one of the weak links in the Bafang BBSHD system. If you apply too much power while in the wrong gear you can strip them creating a problem referred in the community as "peanut butter gear".
Nylon is a necessary evil is because if steel gears were used the BBSHD would be very noisy.
No problem if you strip your BBSHD gears because we have them in stock and it is a fairly straight forward 1 hour install job.
Bought just in case, so can't speak of the product but shipping was promptly shipped via USPS. I am happy with shipping speed of Luna in regards to parts.
Michael GreenJun 12th 2017
bad fuse in a not easy to replace
OK my nylon gear lasted 100 km i am on my 4th i use to been a motocross rider after breaking my leg in two places so i decided to got electric the BBSHD is a very good engine a part from the nylon gear if it was metal and run in gear box oil it would last maybe at lease has long as the bike
maybe longer i have to treat it with kid gloves afraid of turning it into butter come on luna make one out of aluminum then you would nt be out of stock all the time or do you like selling thousand of nylon gear. i think you make a metal gears for the cyclone i would pay 100$ for a good luna product made in the USA and i love Luna Cycle
Feb 10th 2017
There is no earthly reason for this gear to be made of nylon
Seriously, electric motorcycles have pinion gears made of steel, and they're not noisy. Moreover, the plastic used in this gear- PA-6 nylon- is actually not compatible with the lithium grease they use in the factory. Do yourself a favor and, when you inevitably lunch one, get some proper plastics-compatible silicone based grease.