Bafang provides two types pinion gears to us; we identify them by shaft diamter of the iron gear. The old version(BBS01/BBS02) is 10mm diameter for shaft and the new version(BBS01B/BBS02B) is 12mm diameter. Please check carefully when ordering the BBS spare parts.   Bafang no longer stock the 10mm pinion gear and we now only have the 12mm pinion gear available, please be noted. Bafang BBSHD iron pinion gear is also available now. We will provide grease with the pinion gear freely, It would be better to add some grease when replacing the new pinion gear.

Bafang mid crank kit(BBS01, BBS02, BBS03/BBSHD) clutch replacement spare parts; the price includes two sets of thrust ball bearing(each bbs kit needs two sets of thrust ball bearings). There are also two axle retaining lock nuts(4 key slots, a thick one and a thinner one) to lock the thrust bearings in the bbs axle, if your lock nuts are broken, you can order them on our website as well. These are needed when replacing the clutch; if you need tools for replacing these washers and lock nuts, please order the bbs axleremover/spanner/wrench on our website.

One BBS motor needs two sets thrust ball bearings.

8FUN central motor kit hydraulic brake sensor. It includes a sensor and a magnet. It is easy to install, just fix the two parts on your original brake handle bar. The price is for one brake sensor, if you need a pair for your bike, please order two sensors.

This oil brake sensor is suitable for BBS01, BBS02, BBSHD, Ultra M620, Max drive M400 etc.

Bafang mid crank kit bbs01 and bbs02 brake grip. 

This e-brake fits for all the Bafang motors with round Higo connector.

Chainring spider for bafang mid crank kit bbs01 and bbs02. 38T-55T Chainring with 130mm BCD can be used for bafang bbs kits with this chain ring spider. One spacer and 5 bolts are included.  The chain ring is not included, please be noted.

Gearing adapter for bafang mid crank kit bbs01 and bbs02. 32T-48T Chainring with 104mm BCD can be used for bafang bbs kits with this chain ring spider. 4 bolts are included.  The chain ring is not included, please be noted.

Bafang BBS crank arm; bafang M400 /m300 crank arms

Bafang BBS axle remover. If you need to remove the BBS axle or replacing the thrust ball bearing, you may need this spanner to remove the axle.

Bafang bbs01, bbs02 kit plastic gear cover for replacement; there are two types of cover, 5holes and 7 holes, please check holes number for your own bbs kits before ordering the plastic cover for replacement. The 7 holes plastic redunction gear cover is used for new version of BBS kit, BBS01B and BBS02B model. You can also check how many screw holes in your bbs gear cover before placing the order.