Abstract: A snowmobile conversion frame kit including a frame member arranged for securement to a roll bar, that in turn is secured to an associated snowmobile, such that the frame member includes a steering assembly at its forwardmost end and the steering assembly includes a wheel member at each end of the steering assembly, with each wheel member having a brake system secured thereto, with a swing arm pivotally mounted to a rearwardmost end of the frame member, with the swing arm assembly having an axle mounting a tire member thereto, and a sprocket secured to the axle, such that upon power directed to the sprocket rotation of the rear wheel member is effected effecting motivation of the thusly converted snowmobile, wherein towing of the snowmobile is permitted by employing a coupling assembly arranged for grasping and securing the swing arm assembly, with the tow bar assembly having a coupling for securement to a tow vehicle.