A large creator-confirmed catalog, not a verified stat table
The official site says 134 bikes and counting and names examples across dirt bikes, electric bikes, quads and customs. The Roblox description confirms that players buy or unlock bikes and that the Passenger update includes a new dealership.
Those sources establish catalog breadth and the progression role of bikes. They do not provide a complete current roster, prices, performance stats, level requirements or passenger compatibility, so every unsupported number stays out.