Fiend Type O- 20 Inch BikeThe Fiend Type O 20 Inch Bike was designed and spec'ed for riders just entering BMX while being budget friendly and still looking like a high end model. The Type O frame has a 20. 25 top tube, chromoly down tube and features include 3 piece chromoly cranks with a sealed Mid bottom bracket, a 14mm rear cassette hub with sealed bearing driver, an embossed 1 piece Fiend seat post combo, 2. 4 street style tires and Fiend flangeless Team grips. 20. 25TT