Gen 5 frame bushing CURRENT - BDU31YY, BDU34YY, BDU38YY

This is the current Gen 5 frame bushing. It needs the updated tapered-shoulder screw to work properly. This bushing will not work with the older straight-sided shoulder screws. Two inserts are needed per bike. Sold individually.

There are two versions: short and wide. Short is 12mm long, and wide is 18mm long.

Every frame uses at least one short insert. Check with your frame manufacturer to see which combination you'll need. If your frame uses an external battery, there's a good chance that you'll use two short inserts. If you have a battery that is internal in the downtube, and you have to remove the motor to access it, you'll use one short and one long insert. If you have a tilt-out downtube, it could be either.