Mongoose Mountain Bike 29 In Wheel Bikes For Sale The rims aren’t taped inside, and they’re drilled for Schrader valves, so IMO going tubeless isn’t actually worth the hassle, both. It was originally bought by the BMX Products company at the beginning of BMX. The Mongoose brand has seen many changes over the years, at present it offers an entire line of mountain, pavement and BMX bikes.