Used Redline - 20" Proline Junior BMX Race Bike for sale. Not sure of the year. Not sure of the size, but my son started riding it at the age of 4. Had it for almost 3 years, but only used for a handful of rides and 2 actual races as my son never got into bmx racing.
I put the following parts on it after buying: Radio handlebars, Radio stem, OneUp thin lock-on grips, Bontrager plastic pedals. The front hub also got overhauled & new bearings at that time. Bike also comes with a spare metric size tube as most shops don't stock them.