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Mongoose

Mongoose Argus Trail or ST Fat Tire Mountain Bike, 20, 24 or 26 Inch Bike for Kids and Adults, 7 or 16 Speed, Aluminum or Steel Frame, Knobby Mountain Fat Tires, Mechanical Disc Brakes

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Availability: In Stock.
Fulfilled by Amazon
Arrives Sunday, Aug 9
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Style: Trail


Color: Red


Size: 24"


Features

  • MOUNTAIN BIKE: A world of adventure awaits with the Argus Trail or ST by Mongoose. Featuring 20, 24 or 26-inch wheels, this bike is perfect for kids and adults from 4'4" - 6'1" tall. Built for challenging terrains, this bicycle brings the fun.
  • BORN IN DIRT: Lightweight yet durable with an aluminum or steel frame, this adults, girls and boys mountain bike is ready to tackle varied terrain and keep up with adventurous young riders.
  • BUILT FOR ADVENTURE: This Mongoose adults and kids bike is ready to roll with massive 4-inch-wide fat tires that grip dirt, gravel, sand, snow and more. Designed for ultimate traction, this mountain bike features aluminum rims for a smooth ride.
  • SHIFT INTO GEAR: This 7 or 16-speed bike boasts a Shimano drivetrain for smooth shifting and the right gear for your ride. Mechanical disc brakes provide reliable stopping power in varied conditions, giving riders control on rough 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 Argus Trail, a kids fat tire mountain bike built for all-terrain fun. With 20-inch wheels, this boys and girls mountain bike is ideal for riders between 4'3"" - 5', perfect for bringing young explorers into the action. Its aluminum rims and 4-inch- wide fat tires provide the traction and durability needed to conquer dirt, gravel, sand, and snow with confidence. The lightweight yet tough aluminum frame is easy to handle while delivering big-time performance. Equipped with a Shimano 2x8 drivetrain, this 16-speed bike ensures smooth shifting and a wide gear range for tackling varied terrain. Mechanical disc brakes provide reliable all-weather stopping powers, keeping kids in control no matter the ride. Whether climbing hills, cruising the trail, or charging through the elements, the Argus Trail 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): Youth


Brand: Mongoose


Number of Speeds: 16


Color: Red


Wheel Size: 24 inches


Frame Material: Aluminum


Suspension Type: Rigid


Special Feature: Fat Tire


Included Components: Bike


Bike Type: Mountain Bike


Number Of Speeds: 16


Suspension Type: Rigid


Additional Features: Fat Tire


Brake Style: Disc


Specific Uses For Product: Trail


Power Source: Pedal power


Bicycle Gear Shifter Type: Trigger


Skill Level: Beginner


Intended Riding Terrain: Mountain Terrain, Unpaved Trails


Derailleur Configuration: Front and Rear


Bicycle Drivetrain Type: Derailleur


Number of Handles: 1


Color: Red


Theme: Outdoor Adventure, Youth Biking


Style Name: Trail


Warranty Type: not specified


Maximum Weight Recommendation: 125 pounds


Minimum User Height: 142 centimeters


Age Range Description: Youth


Brand Name: Mongoose


Included Components: Bike


Model Name: Argus


UPC: 038675223615


Manufacturer: Pacific Cycle, Inc.


Unit Count: 1 Count


Item Type Name: Fat Tire Bike


Warranty Description: Limited Lifetime


Wheel Size: 24 inches


Size: 24"


Frame Material Type: Aluminum


Wheel Material: Aluminum


Seat Material: Synthetic


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Aug 9

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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Top Amazon Reviews

    • Great Beach flat tire bike
Style: Trail Color: Green Size: 17"
I use this bike for riding on the beach. It does pretty well in soft sand and is great on hard sand. For the money, it is an amazing deal. I expected that saltwater would eat it up in no time, I rinse it after every ride, but so far minimal signs of corrosion, which is untrue for anything else at my Beach place. I expected this to be a disposable unit and so far it’s holding up great. ... show more
Reviewed in the United States on June 14, 2026 by Ed Wachtel
    • Argus bike is awesome!
Style: Trail Color: Green Size: 17"
Absolutely beautiful bike, beautifully packed and arrived one day early! Love it!
Reviewed in the United States on July 16, 2026 by Amazon Customer
    • 17 inch argus st model highly recommend
Style: St Color: Copper Size: 17"
Review Image by Lee
Review Image by Lee
So far on day 1 it gets 5 stars. Arrived on time without any damages. Assemhly was very easy insert the seatpost/seat, bolt on the front tire, attach your right and left pedals which come with labels because your left pedal is threaded opposite so lefty tighty, righty loosy the right pedal is standard righty tighty. I am about 5,10 185 pounds and the 17 inch frame fits me perfectly! Had to slightly adjust the front break pads to eliminate a slight rub on the rotors but it wasn't hard at all. Out of the box the shifter needed 0 adjustment and shifts very smooth however it is a grip shifter so its a little easy to accidentally shift gears when you aren't trying to. Other than that the bike is very solid and rides very nice the brakes aren't amazing but its easy to swap your brake pads down the road. All in all i highly recommend this bike. ... show more
Reviewed in the United States on August 10, 2025 by Lee
    • Great entry fat bike, but tires need deeper tread
Style: St Color: Copper Size: 17"
Review Image by C
Review Image by C
This bike is a good value for the money, and I would buy it again as a entry level fat bike for my child getting into fat biking with me. However it’s not perfect. 1) assembly is not easy. If you don’t have experience assembling a bike it will be tough for you. After I assembled it, the shifting had to be adjusted quite a bit which someone unfamiliar with these adjustments would be totally lost. Same with the disc brakes rubbed badly and I had to adjust the placement of them. 2) it is very heavy, just know that. Comes into play when transporting on a bike rack or climbing an incline, especially for a teen getting into biking. 3) the fat tires are 4.0” wide which is nice, but the tread depth is not very deep. This translates to not the best grip on snowy trails. I’d say maybe half the depth of the tread knobs compared to what came on my Trek Farley fatty. My son slipped out and fell 3-4 times in areas I have grip for days on my bike. But new tires are very expensive, at least $100/tire, so upgrading tires on this price-point bike is hard to justify. If it came with knobbier tires it would be an extremely excellent entry snow bike!! 4) it is very good looking and I’d recommend it for a cheap intro into fat biking. But be weary of the tires if you’re using it on groomed snow trails, but it’s cool! ... show more
Reviewed in the United States on January 5, 2021 by C
    • Great ride despite uncomfortable seat
Style: St Color: Copper Size: 17"
The bike rides so smooth, going off road or path is not an issue at all! The only problem is the seat, it hurts to sit on and the next day you will feel sore. This is not a big deal though just switch it out for a better seat.
Reviewed in the United States on March 14, 2026 by James Sanchez
    • Be sure this is what you want
Style: St Color: Copper Size: 17"
I’m sorry but I need to warn folks like me I’m 5’7 Regular wingspan Not super short legs but not super long I hate everything about this bike It’s so so so heavy It’s a pain to ride My arms are too short for it and my legs too It’s like it doesn’t carry you at all It makes you push it always I don’t know what fat tire bikes are for but I bought it because I thought it would do welll if pulling something or on sand but unless your like at a beach I guess I don’t know why this bike for regular terrain or mixed terrain I thought I’d have joy riding a bike again but dear lord this is a heavy big dreadful painful uncomfortable ride My return window passed so I’m gonna take it to a bike shop and hope they’ll let me trade for something regular Save your over 400 dollars Or research or have a specific use case but this bike AINT IT sorry And that’s not a knock on mongoose Maybe it was my fault for going fat tire But THIS bike SUCKS ... show more
Reviewed in the United States on June 12, 2026 by George
    • Fun to ride and feels safe and strong on the road
Style: St Color: Copper Size: 17"
Review Image by Mike Nova
Great bike looks beautiful in person feels smooth on the road everything came no missing parts easy to assemble and very fun to ride!
Reviewed in the United States on December 17, 2025 by Mike Nova
    • Nice Fat Bike
Style: St Color: Copper Size: 17"
Nice fat tire bike. The materials feel nice and well built. Not cheap.
Reviewed in the United States on November 30, 2025 by Samuel B Wentzel

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