Optional brass lower suspension holders for the FRONT of the rear suspension provide additional weight down low to improve traction and stability while lowering the cars CG.The suspension holders feature Integrated Suspension Settings (I.S.S.) which allows for quick & easy suspension geometry setting. This XRAY concept was first introduced in the original XB8 and has been carried over to the 1/10 scale XB2.XB2 suspension geometry can be completely adjusted using eccentric suspension bushings inserted into suspension blocks, as well as using additional suspension shims.