Select Class: -- select -- SJ01b-Official: 10 & Under - 60cm - AM5 SJ01c-Official: 10 & Under - 60cm - Grand Prix SJ02b-Official: 12 & Under - 70cm - AM5 SJ02c-Official: 12 & Under - 70cm - Grand Prix SJ03b-12 & Under - 80CM -AM5 SJ04b-13 & Over - 70cm - AM5 SJ04c-13 & Over - 70cm - Grand Prix SJ05b-13 & Over - 80CM - AM5 SJ05c-13 & Over - 80CM - Grand Prix SJ06b-13 & Over - 90CM - AM5 SJ06c-13 & Over - 90CM - Grand Prix SJ07b-Official: 13 & Over - 100CM - AM5 SJ07c-Official: 13 & Over - 100CM - Grand Prix SJ08b-Official: 13 & Over - 110cm - AM5 SJ08c-Official: 13 & Over - 110cm - Grand Prix SJ1-Official: 10 & Under - 60cm - Power and Speed SJ10-Unofficial: Seniors (may choose own height ,if none chosen - 80cm) - Power and Speed SJ10b-Unofficial: Seniors (may choose own height ,if none chosen - 80cm) - AM5 SJ10c-Unofficial: Seniors (may choose own height ,if none chosen - 80cm) - Grand Prix SJ11-Unofficial: 10 & Under - 30cm - Power and Speed SJ11b-Unofficial: 10 & Under - 30cm - AM5 SJ11c-Unofficial: 10 & Under - 30cm - Grand Prix SJ12-Unofficial: Beginners - 12 & Under - 40cm - Power and Speed SJ12b-Unofficial: Beginners - 12 & Under - 40cm - AM5 SJ12c-Unofficial: Beginners - 12 & Under - 40cm - Grand Prix SJ13-Unofficial: Open - Starting 60cm - Power and Speed SJ13b-Unofficial: Open - Starting 60cm - AM5 SJ13c-Unofficial: Open - Starting 60cm - Grand Prix SJ2-Official: 12 & Under - 70cm - Power and Speed SJ3-12 & Under - 80CM SJ4-13 & Over - 70cm - Power and Speed SJ5-13 & Over - 80CM - Power and Speed SJ6-13 & Over - 90CM - Power and Speed SJ7-Official: 13 & Over - 100CM - Power and Speed SJ8-Official: 13 & Over - 110cm - Power and Speed SJ9-Official: 13 & Over - 120cm - Power and Speed