I bought the cheapest 125cc Pit bike from Amazon / overview and Terrifying top speed - YouTube
KXD 608 17/14 Inch 125cc Dirt Bike Dirt Bike CrossBike Enduro DirtBike Pocket 125cc Pit Bike Motocross Motorcycle Motorsport Pocket Full Cross Bike OVP Orange : Amazon.de: Automotive
Amazon.com: X-PRO Hawk 125cc Dirt Bike Zongshen Brand Engine with All Lights and 4-Speed Manual Transmission! Electric/Kick Start, Big 19"/16" Tires! (Red, Factory Package) : Automotive