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