An eRoad bike, or electric road bike, is a road bike using an electric help motor fitted either within the hub on the rear wheel or in the bottom bracket. Otherly generally known as hub motor, or mid-push. A calm Driving posture and many mounts mark the Topstone 4 out https://onlinedigitalstore.net/collections/road-bikes?srsltid=AfmBOoq-ckRHlJ6_fn6x6AKzVmIB-SWo1N_v7pypbxnuOq6I2PSleFW0