Scott SCALE20 Kids Mountain Bike Frame Orange Used. Frame has a few chips and scratches consistent with light use, but is in very good condition. Product Type: Kids’ Mountain Bike Frame Set. Color: Orange Pattern. Description: This race-inspired kids’ mountain bike frame is made from lightweight and durable 6061 aluminum, combining strength and functionality. Suitable for children with a height of 115-125 cm. Frame dimensions include a 100mm head tube, 450mm top tube, and 280mm seat tube. The frame weighs 1660g.