Radio, Dice, 20 Inch, BMXRadio Dice 20" BMX Bike Description: The frame on the Dice 20 has been upgraded with a full alloy 6061 T6 making it the very first full alloy bike ever made. Everything on this bike was picked to ensure that this bike has the right equipment to make those first steps into BMX as enjoyable as possible. The Dice has specific geometry that is suited perfectly for the younger rider. The frame uses a 20 top tube paired with a 13. 2 chainstay and a 25 9