" The APS Spring adds an additional resistance to the arm as it compresses, giving the shock an overall harder, and more progressive feeling. This is beneficial on the Awesomatix, as the leaf spring design tends to be fairly linear, even when using progressive screws. There are two springs to choose from, which will provide different amounts of progression, giving you ways to tune in or out progression at any given spring rate!

Why it works?

Roll generates grip right? Well only to a point. As the car rolls, it transfers weight to different corners of the car, however weight transfer doesn't necessarily provide tire force and grip. On low-medium traction tracks, theres a point where we want the roll to "stiffen" and force the tires down into the asphalt, this is what generates our mid corner traction and corner speed, and quick response. If the car rolls and rolls, without forcing the tire into the ground, it will generate less grip, and become more "lazy" to drive. This is because it has less "rebound" force after rolling. On high traction, this can be a great thing to make the car smooth and easy to drive! However on low to medium traction, this added grip and corner speed is what we're always looking for!

This is a great tuning option for anyone with an A800R running on low-medium grip! "

-RC MAKER