IFMAR appropriate size, specially-designed 2WD/4WD rear wheels with 12mm internal hex. The guts countersunk area was redesigned to position the wheel nut deeper. Precision fit, ideal for high-competition race. Produced from versatile, durable material to withstand impacts. Along side it for the wheel is aerodynamic for optimum performance. Medium hardness. Special features of the wheel are noticeable from inside: reinforcement ribs to make the wheels as stable as possible and expel deformation. Pair of 5 pairs (10 pcs) for the cost of 4 pairs. Outstanding value pack. Fits all XB2 & XB4
