Pre-owned BMX bike, Redline Proline Micro. $200. Perfect size and a great race bike for 4-5 year old kids. The bike was purchased new around 2006. One owner. Tire size 18 x 1" Have normal scratches from racing. Redline is a very well respected BMX bike manufacture and MSRP for 2012 Proline Micro is $520. ( http