There are quite a few important differences between the old and the new models. The first is a redesign of the rocker arms and frame in the pivot pin area. We widened the cross-section, to decrease the side leverage applied to the rocker arms by the wheels when taking off and turning hard. Doing this allowed us to add material in critical high-stress areas. It also widened the spring contact area of the rocker compare-W-Springsarm and the spring. This increased the resistance of the spring, making the ride firmer, with better stability and front to rear balance.

We also added material to the center section of the frame to lessen lateral torque, or twisting. Knowing we would be using the same hardware on the medium and large sizes, we went ahead and increased the diameter of the pivot pin, too.

Basically, we upgraded the medium frame to accommodate the 325 Lb. plus skaters that wear a size 10 or less. Except for the hardware, the large frame is even beefier where we thought it might need it.

Tests of our most recent model have proven the chassis is practically indestructible and can take impacts that would totally destroy an aluminum chassis.