If you want to make your IS300 handle, take out the stock rubber sub frame bushings! The squish of the stock bushings are not designed for perfomance so replacing them is major upgrade.
General Fitment and installation
The factory sub frame has formed metal cups that the new bushings will sit in, you will need to remove the stock bushings completely for the new ones to fit properly. Once the sub frame is clean, just knock the new bushings in!
Material
The new bushings are made from a 70 shore D urethane (similar to Nylon). The urethane allows for some absorbtion of road noise and vibration without any deflection. They're effectivly as stiff as Aluminum but without the full harsh noise. Expect more road noise then soft rubber or soft urethane bushings!
Kit includes:
2 Front lower bushings
2 Front Upper Bushings
2 Rear lower bushings
2 Rear Upper Bushings