For the most expert and demanding pilots, for those who want the maximum performance and stability available without compromise. This model has been specifically designed for high-speed racing use: the cylinder body has been enlarged to accommodate a greater volume of oil, just as the tank has increased by a good 12 mm in diameter; moreover, the volume of nitrogen available has been increased so as to be able to compensate for the most critical situations. All this while keeping the weight of the shock absorber unchanged compared to the TJ3 model.