Includes all tools needed for easy assembly. Simply install the front wheel, handlebar, seat and pedals, and then adjust the brakes.With the strength of aluminum, the lightweight frame efficiently transfers energy to the drivetrain for a solid ride. That's something you'll really appreciate when you need power for climbing or responsive handling.The frame is backed by our limited 10-year frame warranty (see owner manual for details).The indexed SHIMANO TZ-31 rear derailleur and micro-shift twist shifter together deliver 21 speeds of smooth, seamless shifting.Kolo 2200 suspension fork absorbs bumps and uneven surfaces for a better ride.Knobby 26in x 1.95in tires improve your control on wet or dry terrain.Alloy linear pull brakes with machined alloy wheel rims add superior stopping performance to every ride.Padded ATB saddle features an alloy quick release seat binder for easy height adjustment.Kraton grips give a performance look and comfort feel to your ride.Ideal for ages: 13 and up; recommended rider height: 5 feet and above. Head outdoors on your Huffy mountain bike - you'll have fun wherever you ride!