With the capable Suntour suspension fork and mechanical disc brakes for maximum stopping power, the Sonic 24 makes a nice upgrade over the Lynx 24. Because as children get older, they start going farther, riding harder, and exploring tougher terrain. This requires a bike that is versatile and durable. If this sounds familiar to you, then the Sonic 24 is the bike for your child! The Supalite aluminum frame and double-walled wheels can take a trolling and keep on rolling; the Shimano 7-speed drivetrain provides low maintenance gearing for spinning uphill and smiling down; and the semi-knobby tires provide a very happy medium for fast riding on pavement and grippy bite on tougher terrain.