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There is a PTFE lined low rotating torque spec bearing on the subframe side of the lower control arm. Additionally, there is a 40mm square drive reinforcement sleeve and clamping rod end receiver on subframe mount. The track width adjustment is generally not touched once it is set, so a quick adjust, rotating collar is not used here.
The positive Heim joint mounted sway bar end links are adjustable in length. This allows all of the preloading in the swaybar to be removed when performing corner balancing. The lower control arm has 4 sway bar mounting positions and a variety of spacers for the top bolt. This allows the use of many different configurations of sway bars from different manufacturers and modifying the bar for more angle while still maintaining good end link geometry.
PSM also offers an optional sway bar offset chassis bracket to compliment the bent tension rod to gain full front side wheel clearance. During installation, the sway bar will need a 7/16 hole size drilled into it to accommodate the larger PSM sway bar bolt.
The lower arm also has a positive steering stop built into it. For a rear steer car, a steering stop is important to reduce the chances of the steering over centering and sticking at really high steering angles.
The outer spherical bearing on the Parts Shop Max lower control arm is adjustable for roll center location by positioning the outer pivot point height with spacers. By adjusting the roll center, you can control the amount of geometric anti-roll in the front suspension geometry and get away with a softer spring while still maintaining good chassis roll control.
Many pro drift cars run surprisingly soft suspension for maximum grip, and this is one of their tricks to do this and control body movement. The single spherical bearing in the simple housing gives maximum clearance for steering angle at full lock.
The tension rod bearing has a lock ring and a forged rotating collar. The collar and lock ring allows quick adjustment of the spherical bearing and caster angle without having to remove the bearing from the chassis. This greatly speeds the caster adjustment and helps reduce the time to make setup changes or to repair battle damage.
The craftmanship is remarkable on these parts, utilizing hand tig-welded, very high quality Japanese seamless DOM tubing with corrosion resistant 3 stage copper paint and gold chromated zinc plating that will reduce the chances of adjusters seizing.
