The Granite Peak Boys" Mountain Bike is a smart choice as an all-around, all-terrain bike for boys. Your junior cruiser will hit the trail with confidence thanks to the Roadmaster Granite Peak Bike"s Shimano rear derailleur and SRAM drive twist shifters. The boys" 24-inch mountain bike is suitable for ages 12 years and up. Its 18 speeds will appeal to his need for speed and desire to attack most any terrain. The mountain bike"s steel frame and 24-inch alloy rim wheels provide motion control and durability. The linear pull brakes and sporty racing paint job contribute to the overall safety of this boys" 24-inch mountain bike. Your little athlete will get plenty of exercise and fresh air in the driver"s seat of this rugged Roadmaster Mountain Bike.