Double-layer PU is more flexible than single-layer bridge. At the same time, the longer bridge also increases the stability of the bridge Suitable for players who like waves After debugging OK you will find low speed flexible high speed without losing stability Motor bracket mounting hole distance is 44mm, suitable for most 6 series motors (6354, 6364, 6368, 6374) Motor bracket adjustment distance from 60 to 68, a total of 8mm adjustment distance