This is an optional Mugen Seiki +2 Aluminum Rear/Front Lower Arm Mount, intended for use with the MBX8 line of vehicles. This optional lower arm mount reduces the rear toe-in and lengthens the wheelbase of the vehicle. The benefits to reducing the rear toe-in compared to the standard rear lower arm mount is an increase in mid-corner rotation and improved handling in bumpy conditions. Typically these parts would be used on higher grip surfaces to increase rotation and free up the vehicle in the middle of the turn. This arm mount will also make off-power steering smoother.