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Mongoose

Mongoose Juneau Men and Womens Fat Tire Mountain Bike, 26x4-Inch Big Fat Wheels, 16-Speed Trigger Shifters, Adult Aluminum Mountain Frame, Blue

  • Based on 267 reviews
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Features

  • Fat tire bicycle is designed for versatile riding on all terrains, including sand and snow, its 26-inch wheels fit to riders 5'4 to 6'2 inches tall
  • With hydro-formed tubing, the aluminum mountain-style frame ensures a durable, responsive ride
  • 16-speed trigger shifters with a drivetrain offer swift and accurate gear changes for optimal performance
  • Ensure crisp stopping and precise speed control with the front and rear disc brakes, adding an extra layer of safety to your rides
  • 26x4 inch fat all-terrain tires mounted on 3 inch wide drilled alloy rims provide extra stability across all conditions

Description

"Get the ultimate biking experience with the Juneau fat tire mountain bike by Mongoose. The Juneau features an aluminum mountain-style frame with hydro- formed tubing that provides a durable, responsive ride. 16 speed trigger shifters offer fast, precise gear changes, while the front and rear disc brakes deliver the all-condition stopping power you need. But the star of the show, of course, are those tires. 26x4 inch fat all-terrain tires on 3 inch wide drilled alloy rims provide extra stability in all conditions – including sand and snow. Don’t let anything stand in your way with the Mongoose Juneau. "

Bike Type: Mountain Bike


Age Range (Description): Adult


Brand: Mongoose


Number of Speeds: 16


Color: Blue


Wheel Size: 26 Inches


Frame Material: Aluminum


Suspension Type: Rigid


Special Feature: Aluminum Frame, fat tire, mountain bike


Included Components: Mongoose Bike


Bike Type: Mountain Bike


Number Of Speeds: 16


Suspension Type: Rigid


Additional Features: Aluminum Frame, fat tire, mountain bike


Brake Style: Disc


Specific Uses For Product: Trail


Power Source: Pedal power


Bicycle Gear Shifter Type: Trigger


Is Autographed: No


Number of Handles: 1


Skill Level: Intermediate


Derailleur Configuration: Front and Rear


Bicycle Drivetrain Type: Shimano


Color: Blue


Style Name: Bicycle


Frame Material Type: Aluminum


Wheel Material: Aluminum


Warranty Type: Limited


Is Assembly Required: Yes


Minimum User Height: 64 Inches


Age Range Description: Adult


Brand Name: Mongoose


Included Components: Mongoose Bike


Model Number: R8228AZ


Model Name: Mongoose juneau


Model Year: 2020


Global Trade Identification Number: 47


UPC: 038675213647


Manufacturer: Pacific Cycle, Inc.


Item Type Name: Bike


Warranty Description: Limited Warranty


Wheel Size: 26 Inches


Size: One Size


Item Weight: 19.5 Kilograms


Frequently asked questions

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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.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • Great Bike at Their Sale Price
I had seen this bike for close to their list price for a while, then I happened to see it at $426, and I bought it. Great bike for that price. Acceptable bike for a few hundred more. But at less than 500, this is a lot of bike. The bike rides pretty well and I'm happy I bought it and would buy it again for that price. I looked at the various Mongoose mountain bikes and bought the Juneau because it has a front derailleur, rather than being a 1x. (Pronounced "1 by".) Reviews for the other bikes (Dolomite, Aztec, Malus) indicated that people couldn't climb hills b/c the bikes were geared too low. This is true. The Argus is a 1x, but you can climb with it b/c it has a 42 tooth (or thereabouts) gear in the back. Just compare the photos of the Argus to the other 3 and you'll see they all have a tiny cassette of gears in the back. The Juneau also does not have a big gear in the back, but with the extra small gear in the front due to the 2x setup, you can still climb. This is a good bike. It's quite light for a fat bike that cost me less than $500. The components are not great. The brakes in particular... they do stop the bike but if I were going to use this thing over time I'd want to replace those with hydraulics. I wouldn't got down anything too steep + long (like a 1 kilometer consistent steep descent) with this either, because those brakes feel like they could burn out and leave you helpless. But for just riding around on some local trails, without trying to win a race, they're okay. And the bike itself performs well. The gears too and shifters are basic, but work. I didn't need to tune them. They worked out of the box. I took it on a regular trail that is not frequently ridden by bikes, and overgrown. The bike did well. I went right over a bunch of stuff. The bike performed fine on some basic hills, and roads. The seat is not comfortable. That will need to be upgraded. Luckily I have some lying around. The handlebars are... this is always a personal thing, but to me they're too straight. I'd like to get some a little more swept back. You can mount a single water bottle to the bike, but not more. That's a bit lame. Overall, for the price, I'm happy with the bike. An aluminum fat bike that is less than 40lbs at less than 500 bucks is nice, even though the brakes and gears are only basic. The manual that it came with was hidden in the seat box. FYI on that. Since I know bikes, I put it together myself without the manual, which was easy enough. (FYI, if you have ever had to take a bike apart to pack it for an airplane trip in a bike bag, then you can assemble this without a manual no problem. You're just putting the handlebars on, adjusting the stem to true, putting the pedals on and the seat in the seat tube. Really easy.) (For reference, I ride a lot and have an expensive Canyon Spectral trail MTB and a carbon gravel bike, and then a number of cheaper bikes. I'm not a super expert, but I know what I'm doing. I bought this Juneau mainly because I wanted a fat bike to try riding in the snow in the winter and I've heard from friends that they don't really like fat biking, so I figured I'd buy a cheap one before spending 2k on a "real" one, knowing that if I like it I'll want a spare for a friend to ride anyway.) ... show more
Reviewed in the United States on September 25, 2022 by Frank L
    • Great for country dirt roads
It's not easy to pedal compared to normal bikes, but this bike will go anywhere. Low pressure tires mean fairly smooth ride on pockmarked dirt roads, and have not gotten a flat on two years of riding. Since moving to the country this has become my goto bike for local riding. Still like my numerous other bikes for specific terrain and purposes, like going really, really fast. The only way you are going really fast on a fat tire bike is to ride it off a cliff! This is a really good mid range fat tire bike. It is solidly built and reliable. No squeaks or rattles, even when powering up a hill. Mongoose is making pretty good bikes these days. ... show more
Reviewed in the United States on March 20, 2026 by John Public
    • The bike is a blast to ride!
A week before purchase of the Juneau, I test rode a Trek Farley. The Farley is a nice bike to ride, but much more expensive, and honestly, no appreciable difference to me for my simple purposes anyway. My original intent for purchasing a fat tire bike is for Winter riding, even though there isn't much snow in Up State, Hudson Valley region NY anymore, there still is mud, debris, and general mess on the local bike paths. I just started riding this bike (about 5 days now), and honestly I love it. It is just plain fun to ride. It rolls over leaves, tree branches, and through mud relatively smoothly and with stability. In summary, I'll admit I am a name brand snob, Trek, Specialized, etc, but I am still very happy with the looks of the Juneau...and glad I saved a great deal of money buying it. ... show more
Reviewed in the United States on April 12, 2024 by Steve
    • Excellent fat bike
Review Image by ronaldo crespin
Review Image by ronaldo crespin
Review Image by ronaldo crespin
Review Image by ronaldo crespin
Review Image by ronaldo crespin
Review Image by ronaldo crespin
I really like this fat bike. I don’t like the saddle. I don’t like that it does not have a kickstand, but I’m an older guy anyhow. It appears that it will require an aftermarket rear mounted kickstand. The color of this bike is absolutely vivid and beautiful. I have done some quick mods with stuff I already had on hand. I will be getting a suspension seat post and more better saddle, for sure! And I absolutely do not like the brake levers. They are too hard to reach and it’s an irritating situation. It is such an absolute shame that some people have had bad luck with their bikes when they first receive them! Of course, human error must be taken into consideration with some of these problems. My bike came to me with no damage or installation issues. I put it together without any difficulty or unforeseen dilemmas. It is such an amazing bike and I am so grateful to have purchased it at 46% off of list price! Although I have been watching this bike for over three years, waiting for just the right time to buy! And yes, pacific cycle can be quite aggravating when it comes to service! But I am a very satisfied customer as far as this bike is concerned! ... show more
Reviewed in the United States on December 24, 2022 by ronaldo crespin

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