Redline proline junior 24 bmx bikeredlines proline junior 24 bmx is for smaller riders who are not quite ready to play with the heavyweights but looking to move up to cruiserweight class the redline formed 6061 t 6 alloy frame sealed hubs and 100 crmo butted and tapered race fork will give you performance and value thats top class vee speedster tyresthe proline junior 24 also features the tektro brake system aluminium hubs and stainless steel spokes as well as vee speedster tyres and m