Mongoose Mack Mag Wheel Mountain Bike, 26" Wheels, 21 Speeds Shimano Revo Twist Shifters, Men's Frame, Orange & White On Black

21-speed Shimano Revo twist shifters with a Shimano rear derailleur provide quick, smooth gear changes Front and rear mechanical disc brakes provide crisp stopping in all conditions 26-inch wheels with aluminum mag wheels for durability and an aggressive look Fits adult riders 5 feet 4 inches to 6 feet 2 inches tall. Tool-free adjustable seat post lets you fine-tune your perfect fit. Requires assembly Durable steel 3-piece crank offers optimal gearing on tough rides Tool-free adjustable seat post for easy height adjustments