Start them out right! When little BMXers are ready to take racing to the next level, the mid-level Redline Proline Mini is ready to help get them there. The Proline Mini is made with a Redline proprietary aluminum alloy frame with a sealed Euro bottom bracket, higher-end 3-piece cranks, and sealed hubs. The 100 percent chromoly steel race fork with tapered legs helps young riders maneuver the Proline Mini more easily. The combo saddle/seatpost is lightweight and easy to use. Fits riders 50 to 54 inches tall.