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In the performance department, we moved the rear hub carrier forward by 1/8 in. over stock geometry. While this does little to change the overall wheelbase of the vehicle, what it does do is alter the angle of the drive Shaft as it exits the differential. This reduces the tendency of the Baja to squat under acceleration. This happens when the torque of the motor is opposed by the force of friction created by traction at the rear tires causing chassis squat, consequently causing a loss of grip. By sliding the rear hub carrier forward, we use the torque of the motor to effectively push the rear wheels into the ground, using both the weight of the Baja and the torque of the motor to improve acceleration performance. Up top, RPM rear upper A-arms have had a shape change for added lateral stability - the stock Y shape tends to allow the upper pivot ball to move forward and backward while the RPM D shape holds the upper pivot ball in place more solidly, providing a more consistent feel to the performance of the Baja. Just like our front arms, we mold our Baja 5B / 5T rear A-arms in both a stealthy black and a dyeable white version for those that like to personalize their vehicles. A little Rit clothing dye, some hot water and our dyeable A-arms can be dyed to any color you prefer! * The shock mount on the lower A-arm has been moved forward by a full 1/8 in. to eliminate the severe rubbing issue of the wheel at the shock mount that would cause stock arms to break.
* By moving the shock mount forward, we were able to increase the material around the shock mount to protect the lower shock rod end, preventing it from being the lowest hanging component of the A-arm assembly.
* We've incorporated a third inner hinge pin boss at the inside hinge pin of the lower A-arm and tied in structural ribs that help disperse impact energy and rotational forces from engine torque over all three hinge pin bosses.
* Similar corner webs to those found on our front A-arms have been designed into the rear upper and lower A-arms as well to help improve strength and durability.
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