My son rides a POS transformer bike that is holding him backfor any kind of distane it feels like it weighes as much as my GT MTB. I woul like to get him a BMX 20" bike but the frame will need to be very small. Any help will be appreciated. I do not mind building the bike or piecing one together but I need help where to start. It might be a used bike or new I have no idea.
Visit a LBS that sells used bikes, craigslist, and e-bay.
I found a used trek jet for $60 in good condition, far lighter then walmart/target jobs and a bit cheaper.
The seatpost is about 4-5" above the seat tube, should fit an average 5 y/o standover wise, the top tube might be a little long.
The Lil Ripper is awsome!!! I would get him a 16" again but he basically needs more gear and a lighter bike. The Transformer bike his Aunt got him is killing him but he still goes 4+ miles but he pedals so fast and if he stops pedaling its like an auto brake is ingaged!
single speed Krampus, burley piccolo, salsa mukluk ti, CETMA cargo bike, M5 Shockproof,
I just got a used Kona Makena for my 5 year old, it is about 10 pounds lighter than his previous "bike". I was looking for a trek or specialized bike for him. All of these have aluminum frames and reasonable components.