Lightweight yet ultra-strong front pivot ball steering block molded from particularly developed difficult graphite composite material. Graphite material provides more responsive feel particularly on bumpy tracks. Means free suspension system motion in dusty conditions. Fits larger outside 8x16x5mm ball-bearings for increased reliability and life-span. Appropriate most track conditions, particularly for high- and very-high-traction tracks. Fits XB8, XB8E, XT8, XT8E