APS™ Formula:  Animated Polymer System:

As the name implies, this compound is very lively and offers high rebound with lots of control and lean.  For the same durometer, the APS will turn 10% to 15% more than the same durometer of other brands.  In addition, the APS does not change much when you tighten the kingpin nut past snug.  We recommend tightening to the point where it is difficult to turn the bushing in the bushing seat by hand.  Use a flat washer for lower resistance and a cupped washer for higher resistance.

• .975" Dia x .60" High (24.77mm Dia x 15.24mm High)
• APS rides a couple of points softer than they test, so order accordingly
  
• Hard durometer bushings (95a - 97.5a) are for heavier-weight riders (over 125lbs) and allow for a nice tight set-up.
• Medium durometer bushings (85a - 90a) are for medium-weight riders (75 - 125lbs) & those looking for a looser setup in the RoadSide position when coupled with a harder duro bushing.

Chubbys offer the highest stability of all the shapes discussed here and work best in a truck that has a stepped bushing seat to take advantage of the secondary step in the bushing, the vertical side wall and the large backside of the Chubby.  They still turn very well and can be used in a softer duro if you are looking for a stable yet plush and comfortable setup.  The Chubby is one of our most versatile bushings because of its size, shape and wide variety of applications.
Excellent when used as a Barrel/Chubby combo - but incredibly fun and variable when used in the Roadside position in combo with other shapes & or duro's in the Boardside position.