Mongoose Grafton Mountain Bike, 21 Speed, Aluminum Frame, Knobby Mountain Tires, Suspension Fork, Trigger Shifters, Mechanical Disc Brakes | Trigger Shifter, Aluminum Frame, Front Suspension

Price: $402.49 - $349.99
(as of May 02, 2026 23:26:53 UTC – Details)
Buy On Amazon

Adventure starts where the pavement ends with the Mongoose Grafton, an adults and kids mountain bike built for all-terrain fun. With 24, 26 or 27.5-inch wheels, this adults, boys and girls mountain bike is ideal for riders between 4’8″” – 6’0″”, perfect for bringing all explorers into the action. Its aluminum rims and 2.3-inch-wide knobby mountain tires provide superior traction and stability. The aluminum mountain frame is easy to handle while offering a clean look with its modern geometry and internal headset. Equipped with trigger shifters, this 21-speed bike ensures smooth shifting and a wide gear range for tackling your ride. Mechanical disc brakes provide reliable stopping power in varied conditions, keeping riders in control. Whether taking on the trail or cruising the neighborhood, the Grafton is ready for the adventure. Assembly is easy with a few common household tools and the included instruction guide. At Mongoose, we know our roots – as pioneers in BMX and action sports for over 50 years, we’re dedicated to delivering an epic ride every time. Get ready to push the limits.
HARDTAIL MOUNTAIN BIKE: Go exploring with the Grafton by Mongoose. Featuring 26-inch wheels, this bike is perfect for riders from 5’2″ – 6’1″ tall. Roll over difficult terrain with ease.
BORN IN DIRT: From pavement to singletrack, the aluminum hardtail frame is built for adventure. With modern geometry and an internal headset, this womens and mens mountain bike offers a clean, streamlined look.
BUILT FOR ADVENTURE: This Mongoose mountain bike is ready to roll with 2.3-inch-wide knobby mountain tires for superior grip and stability. The suspension fork absorbs bumps and rough terrain, ensuring a smooth, controlled ride.
SHIFT INTO GEAR: This 21-speed bike features trigger shifters for smooth transitions and the right gear for your ride. Mechanical disc brakes provide reliable all-weather stopping power, giving riders control on varied terrain.
KNOW YOUR ROOTS: As one of the OGs in BMX and action sports, Mongoose has helped bring this movement to the world. For over 50 years, we’ve been all about epic rides and pushing limits – and we’re just getting started.