The Cobalt line combines proven geometry and dialed components giving you the best start out of the gate during your first days racing. The Cobalt Mini is our pint-sized machine, the scaled-down frame and lighter build kit make this thing unrivaled out there on the track. The Cobalt now features fully sealed front and rear wheels, making it a truly unstoppable machine. - 6061-T6 alloy frame - Crmo, 1" butted steerer, hi-ten fork - RADIO R450 rim, double wall, 28h wheel set - RADIO Cobalt forged alloy 3pc crank