Mitas 90/100-12 C-20 STONE KING Motocross Red Stripe 46M Tire Pitcross Brand: Mitas Condition: New Rim: 12in. Width: 90/100 The Mitas 90/100-12 C-20 STONE KING rear tire is designed for 50 - 100cc junior motocross and pit cross applications. Best used in conjunction with a C-19 front tire. Load/Speed rated to 46M. Red stripe indicates a tire for junior motocross competition and pit cross.