Originally Posted by erevo1*16

Not sure how they would fit... But the new HotBodies D413 uses 12mm hubs on the front. (they are also able to use a 9.5mm hex that is included in the kit also so the b44 guys can switch and not worry about pitching good tires because of the new kit.)

The hex has a 5mm inside diameter, and is designed to ride on the inner race of the bearing.

Just thought I'd share if it can help~

http://www.hpiracing.com/en/part/112744