Considering the evolution and growth that our sport has attained in the last years, the FIRS and the Speed Technical Committee have decided to allow, starting from February 1 2016, the use of the wheels up to a maximum size of 125 mm but only for the Marathons (JUNIOR and SENIOR) and the MASTER Category (MEN and LADIES).

 Please check in the Download section below, the Technical Bulletin #1 both in the English and Spanish version.