Mongoose Excursion mountain bike, 26 inch wheel, 21 speeds, mens frame, black / green

Steel mountain frame with suspension fork to smooth bumps and increase control on the trail 21-speed with twist shifters and Shimano rear derailleur for precise gear changes Front disc and rear V-brakes provide fast, controlled stops Alloy rims provide lightweight durability, while the 3-piece crank makes for a reliable power train 26-inch wheels fit adult riders 5 feet 4 inches to 6 feet 2 inches This bike comes unassembled Material:Steel Age Range: 12 Product Weight: 36.16 lbs Bicycle Frame size: 18 in