Kyosho MP9 TKI4 Rear Lower Suspension Arm Set IF423B

This is an optional Kyosho Rear Lower Suspension Arm Set for the TKI4 Buggy. These arms are directional, marked with a "L" and "R", and are the same as the stock replacement TKI4 arms with one exception: the stock arms (KYOIF423HB) are made from "Hard" material, these arms are not. 

The lower rear suspension arms benefit from significantly increased webbing around the gussets in the arms. The arms have been reinforced in the web area to make them especially stronger in line with the hinge pin, while still allowing some necessary flex in the perpendicular axis to make shock set-up a LOT easier. Arms that are simply made super stiff in every direction will make the car very difficult to tune properly because there’s such a small tuning window. The TKI4 arms add strength and durability in the right areas, while still providing a car that’s easy to set-up for your conditions and driving preferences.