It Is An Aluminum Sus Mount "E" With A Length Set To Match The Short Rear Suspension Arm For The YD-2 Series. By Replacing The Resin Bushes (B8-301BS, Sold Separately), It Is Possible To Set The Length Between The Sus Pins To 60.8 To 64.0 Mm.
When Installing On The Resin Chassis (Rear Front Side) Of The YD-2S, There Are Interference Parts, So Please Cut Or File Down The Interference Parts Of The Chassis. (See Below)