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Mongoose

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

  • Based on 185 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon
Arrives Friday, Aug 21
Order within 8 hours and 29 minutes
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Size: 26-Inch Wheels


Color: Teal


Features

  • FAT TIRE MOUNTAIN BIKE: Go exploring with the Grafton by Mongoose. Featuring 26-inch wheels, this bike is perfect for riders from 5'4" - 6'2" 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.

Description

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.

Bike Type: Mountain Bike


Age Range (Description): Adult


Brand: Mongoose


Number of Speeds: 21


Color: Teal


Wheel Size: 26 inches


Frame Material: Aluminum


Suspension Type: Front


Special Feature: Aluminum Frame, Lightweight, mountain bike


Included Components: Bike


Bike Type: Mountain Bike


Number Of Speeds: 21


Suspension Type: Front


Additional Features: Aluminum Frame, Lightweight, mountain bike


Brake Style: Disc


Specific Uses For Product: Trail


Power Source: Pedal power


Bicycle Gear Shifter Type: Trigger


Skill Level: Intermediate


Gear Type: cassette


Intended Riding Terrain: Mountain Terrain, Unpaved Trails


Derailleur Configuration: Rear


Bicycle Drivetrain Type: Derailleur


Number of Handles: 2


Color: Teal


Style Name: Teal


Frame Material Type: Aluminum


Wheel Material: Aluminum


Age Range Description: Adult


Brand Name: Mongoose


Included Components: Bike


Model Number: R8023


Model Name: Grafton


Model Year: 2022


UPC: 038675091375


Manufacturer: Pacific Cycle, Inc.


Item Type Name: Mountain Bike


Warranty Description: One year limited warranty


Wheel Size: 26 inches


Size: 26-Inch Wheels


Maximum Weight Recommendation: 220 pounds


Minimum User Height: 64 inches


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Aug 21

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Leasing options through Acima may also be available during checkout.

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Top Amazon Reviews

    • We love it
Size: 26-Inch Wheels Color: Tan
Review Image by Vladyslav
Very good quality for this money. Added for my wife and daughter.
Reviewed in the United States on August 8, 2026 by Vladyslav
    • Terrible components
Size: 27.5-Inch Wheels Color: Blue
Got the bike really fast. Loved the color and had to wait for almost a month until my bike repair guy was back from vacation. Brought the bike to him to assemble. Got it put together and I took it for a spin. Brakes were horrible. I couldn't switch gears properly. He adjusted everything replaced all cables right away. Brakes then worked amazingly! He worked on my gearing for almost three hours (granted we were talking a bit) but pulled out every trick in the book. Could not figure it out. Huge disappointment. Sent back and got a refund but I'm out the cost him working on it and my time taking it apart and boxing it back up. Brought it to ups and they told me because the corner of the original box was wet they had to repack it and charged me for it. I did however get the cost of the ups back. Overall not happy with the product! ... show more
Reviewed in the United States on September 23, 2022 by Nicholas B Johnson
    • Top seller for a reason.
Size: 24-Inch Wheels Color: Purple
High quality bike. Great price for the quality. No issues.
Reviewed in the United States on June 27, 2026 by Alexalpha
    • Low quality for the price
Size: 26-Inch Wheels Color: Tan
Our bike was impossible to put together as one part had fallen inside the handle bars, it was what the screw needed to go into, so my son was building and the screw seemed to be wrong until we realized what happened. Required much more taking apart and gluing parts in which should not have happened with a brand new bike. Also the tubes keep going flat after storing it overnight in the shed. and the brakes are terrible. They lock and they don't react quickly. For this price, we are very disappointed in this bike. It's already going to need a trip to the bike shop to fix these problems. ... show more
Reviewed in the United States on July 20, 2026 by Brock Hanson
    • Bent front disk
Size: 26-Inch Wheels Color: Tan
So, when putting it together out of the box I noticed one thing; the front brake disk is bent and rubbing against the pad or the bolts.. I took it off altogether after I couldn't pound it back flat,and now going to have to buy a front disk. One other thing is the shifter design conflicts with a plastic mechanism next to it. Im being generous with 4 stars. Not sure if I should contact support for this or leave it alone. Buy at your own risk. ... show more
Reviewed in the United States on May 2, 2026 by Anthony L Williams
    • Bike
Size: 26-Inch Wheels Color: Tan
My nephew loves it
Reviewed in the United States on July 25, 2026 by Timothy Schultz
    • Poor stem design but good bike
Size: 24-Inch Wheels Color: Purple
Overall this is a good bike for the price. We did have to get a replacement stem before we could use the bike but it was covered under the mongoose warranty. It arrived directly from mongoose in about a week.
Reviewed in the United States on July 27, 2026 by kb1
    • Very cheap
Size: 26-Inch Wheels Color: Tan
Design is very nice. The frame and size seemed small for my height (5’6”). Very poor quality components which break easily so be careful with the assembly and fine tuning. Once one starts to assemble the bicycle, trouble starts. There were issues with every item that needed assembly. The instructions don’t help either. Make sure one fine tunes all the gears and derailleurs before riding the bicycle. Maybe Amazon should spend some money on assembly and fine tuning the bicycles it sells and after this sending them out to the customers fully assembled. ... show more
Reviewed in the United States on October 5, 2023 by Frank

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