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🚵♂️ Own the trail, don’t just ride it!
The Mongoose Dolomite Fat Tire Mountain Bike is a rugged, steel-framed ride built for adults 5'4" to 6' tall. Featuring 26-inch wheels with supersized knobby tires, a 7-speed drivetrain, and mechanical disc brakes, it delivers reliable performance across all terrains including snow, sand, and dirt. Lightweight alloy rims and an adjustable threadless headset enhance speed and comfort, while beach cruiser pedals and a sturdy 52-pound frame ensure durability. Perfect for millennial adventurers craving a versatile, ready-to-assemble bike that blends classic toughness with modern trail-ready tech.























| ASIN | B00J7J40TM |
| Additional Features | Lightweight, fat tire, mountain bike |
| Age Range (Description) | Adult |
| Age Range Description | Adult |
| Best Sellers Rank | #116,352 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #60 in Mountain Bikes |
| Bicycle Gear Shifter Type | Twist Grip |
| Bike Type | Mountain Bike |
| Brake Style | Disc |
| Brand | Mongoose |
| Brand Name | Mongoose |
| Color | Blue/Red |
| Customer Reviews | 4.4 out of 5 stars 3,554 Reviews |
| Frame Material Type | Alloy Steel |
| Global Trade Identification Number | 00038675414488 |
| Included Components | Mongoose Dolomite Fat Tire Bike |
| Is Assembly Required | Yes |
| Is Autographed | No |
| Item Type Name | Mongoose Fat Tire Bike |
| Item Weight | 52 Pounds |
| Manufacturer | Pacific Cycle, Inc. |
| Maximum Weight Recommendation | 301 Pounds |
| Minimum User Height | 5 Feet |
| Model Name | Mongoose Dolomite Fat Tire Mens Mountain Bike |
| Model Number | R4144 |
| Number Of Speeds | 7 |
| Number of Speeds | 7 |
| Power Source | human-powered |
| Seat Material | Vinyl |
| Size | 17-Inch/Medium |
| Specific Uses For Product | Trail |
| Style Name | Mountain Bike |
| Suspension Type | Rigid |
| UPC | 038675414488 |
| Warranty Description | Limited Lifetime Warranty |
| Warranty Type | limited lifetime |
| Wheel Material | Alloy Steel |
| Wheel Size | 26 Inches |
C**R
Great Bike, Great Value, Easy to Assemble
As a kid I used to take my bikes completely apart, paint them and then reassemble them. I learned a lot about how to dismantle and reassemble bicycles. This bike came mostly assembled besides the front tire, handle bars and seat. Handle bars were actually attached to the cables for the gear shifter and the brakes. First off, the instructions, for the novice, don't really give you everything you need when assembling this bike. I went off childhood prior knowledge. It took maybe 15 minutes to get it completely assembled, aside from me not being able to read the word "rear" on the forks when assembling that portion of the bike. Quick fix though, removed the handle bars, spun the goose neck and reinstalled the handlebars. FIXED! Filled the tires to the recommended 20psi. To get the seat to stay in place (I'm a bigger guy - 6'2" about 265) I had to tighten the little paddle tightener down a little tighter then expected. Hoped on the bike and away I went. 20 minutes out of the box and I was riding it. I had to adjust the braking systems to work properly as they are installed but not tuned. I may have to slightly adjust the shifter as it will push the chain completely off the sprocket when I shift into 7th and push the shifter all the way forward. Not a big deal, just needs a quick tune. Immediately took it on a 6 mile ride, roads, sand, back woods and it performed excellent for me. I am not a professional biker, I do not go flying through the woods to get my adrenaline fix. I'm also older so I like a good workout but not an adrenaline rush. This book works perfect for exactly what I needed it to do. Since I did just receive this bike if any unpleasant updates come along I'll update them here. Currently it's a really nice looking bike and rides really well. OH, and it's a little heavier then your expensive titanium or aluminum or whatever bikes. You'll know you have something sturdy when you try to pick this thing up. It's heavy duty. So far I would recommend this to anyone that loves to ride and also loves the idea of having a wide track when riding through sand, mud, dirt or snow.
T**.
My first fat tire bike, love it!
I have always ridden bikes.... just for fun. I have a Fuji hybrid mountain bike....thin tires, front shocks, ect... however that bike does not do well in snow or icy trails. I wanted to buy a bike that could go over snow, to keep up biking over the winter. I searched as you you are doing, I read reviews, not knowing what to buy... so I settled on this bike. When it arrived I immediately opened and put together/due to all the reviews saying theirs were damaged in shipping... mine arrived with no damage....however the cardboard box it arrived in was flimsy/ I had no issues. I put this together and of course took it for a spin. My initial feelings were "low" about this bike. I put together and test drove while it was 70 and sunny out. I initially thought the bike was too heavy, too slow, not enough gears, brakes I felt were under powered and took too long to stop. I wanted this to be a perfect snow bike, so I also bought the cloud 9 seat and different pedals to try and make it perfect for my first snow ride.....Well we had about 3" of snow, it was sunny and 19 degrees out. I reluctantly took this bike out. I made sure the tires were 8psi/sounds low I know/ but that is what I read to have tires set to.... So I bundled up/ opened the garage and off I went! WOW! now my feelings for this bike changed in the first mile! I was going through snow effortlessly and was so easy to pedal! No slipping or sliding! And for the "gears".... it has all I need! Now this isn't a "fast"bike.. I usually travel 12-14mph according to my Garmin watch...this bike I averaged 6.3mph through the snow. There was no need for any more gears, and the brakes worked perfect due to the resistance of the snow and weight of the bike. I was only using 2-3 and sometimes 1st gear. For me this is no speed bike, but a perfect get out the house in winter bike! My first winter trip on this was going to be 1-3 miles because I didn't believe it would be enjoyable. I ended up traveling 14 miles on my first trip! My second trip was 18 miles! these/for me/ were tough miles because there is little to no "coasting" due to the resistance of the snow and weight of the bike.. so I was constantly peddling. This ended up being exactly what I was looking for.. after all it got my out of the house and exercising! My smart watch says I burned over 2,000 calories on the first 14 mile trip.
C**L
Great Entry Level Bike (with a few adjustments)
I believe this is a great bike as long as you enter into the purchase with the right expectations. The price point for this bike isn't cheap, but this is an entry level fat tire bike. After putting in roughly 75 miles on road and trails, I can say that this is a great entry level bike for the money! Pros -Great for overweight riders -Navigates well through road and trails -Was easy to assemble (did not have any assembly issues I had read about in other reviews) -It's a nice looking bike. I've received many comments on how cool the bike looks! Cons -Bike Weight - This bike is heavy! It's a beast of a bike. Double up your protein shakes and hit the gym if you're going to lug this bike around everywhere you go. -Shipping - There's not much protecting the bike in shipping. Mine made it unscathed, but I now understand the negative reviews I read about damage during shipment. -The seat.....I saw many negative reviews on the seat being laughably small. It's tiny. It's uncomfortable. It's terrible. Spend the extra $30-$40 for a nice seat as it makes a huge difference in the ride. In my picture I have the bike fitted with a Cloud 9 seat. I would recommend Cloud 9 or YLG oversized comfort seat. I bought both and they are both great! - I have had to adjust the gears a few times to keep the gears from slipping out of low gear. I am no bike mechanic, so I've relied on online video tutorials to properly adjust the bike. It hasn't been a major issue, and is fixable. This goes back to the bike being more of an entry level bike. Expect to put extra time/money into it to make it exactly what you want. Reading some of the negative reviews it sounds like there have been quality issues with shipping and bike construction. However, it looks like I got a good one. I would definitely recommend this bike for any casual rider looking to get out and ride their local streets/trails.
C**N
This bike is awesome, get one!
Ok, I literally just got this bike a few hours ago. I slapped it together in just under an hour. Nothing about the assembly was difficult. I never even opened the instruction booklet. The hardest part was putting on the pedals. My adjustable wrench got a little bound up as I tightened them on, no big deal. I live in a rural area of North Central Florida and all the roads in my neighborhood are sugar sand. This bike glides through it in first gear with ease. My 64 year old mother-in-law who has had knee replacement surgery just road it around our circular driveway several times, through loose sand, bumps, rocks and roots with no problem. It was perfectly adjusted right out of the box, the brakes, the gear shifter, everything worked great. The only issue I've had is the twist shifter is VERY sensitive, and to my knowledge that sensitivity is not adjustable. However, I've also had bikes with twist shifters that were so hard to shift when my hand was sweaty that it just wasnt possible. So, maybe a sensitive twist shifter could be considered a good thing. It doesnt really matter in the long run because im chainging out the twist shifter with a shimmano rapid fire, like many people who buy this bike do. Long story short, this bike is awesome, and you should get one. Stay tuned for updates because I'm turning this awesome fat bike into an awesome fat ebike. 7/27/18 Posted a pic of the newly assembled ebike. I call her, The Fatgoose: -48v 1000w Aosom front hub motor kit for 26"x4" tire in the front. -48v 1000w 15ah (720wh) Joyisi lithium ion battery in the rear. (Came with rear rack.) -EZ trainer adult training wheels mounting bracket with quick release hardware installed. (To facilitate mounting of the rear rack that came with the battery) -Nighteyes 1200 lumen headlight with rechargeable lithium ion battery. (With bonus taillight.) -Shimmano rapid fire 7 speed shifter. -Soongo wireless speedometer. (With bonus tailight.) -Round sideview mirror -Giddyup comfy memory foam seat with integrated tailight.
C**S
Happy Camper
While in Salida, CO last week I visited one of the many bicycle shops and became very interested in a well-appointed fat tire bike (Giant Momentum, $620.) sitting in the window. Having been a life-long bike fan (have owned many) I studied the construction, components, etc., and took an instant liking. Bicycles were all over town and I saw a few fat tires, but only a few, and I continued to evaluate whether I would pursue another bike or not. This was especially difficult due to the fact that my wife had just given me a very nice, new 21-speed Electra "Towney" ($650.) for my birthday about 60 days ago, which is currently parked next to my older Raleigh Chill mountain bike that I used to race as an amateur, and on which I have had countless excursions in pursuit of the "first blood" trophy with my firefighter co-workers. I am obviously now more interested in "cruising." While enjoying Salida a gentleman came along on a fat tire bike and after I complimented him on the bike he almost forced me into riding it, which I did, followed by him explaining that it was a $200. Mongoose with a couple of inexpensive upgrades for additional comfort. Following the gentleman's advice I located the Mongoose on Amazon and decided to indulge. I also took Amazon's "people who bought this item also purchased..." advice and grabbed the Sunlight Cruiser Retro Handlebar and the Sunlight Cloud-9 Suspension Cruiser Saddle. Although I believed I ordered a black version of the Mongoose, to match my new Electra, somewhere in the process it was changed to dark blue. The bike arrived today in a single box, damaged in three places including one significantly dog-eared corner with metal immediately behind it which made me a bit nervous. After unpacking the unit I confirmed that fortunately no damage had occurred correlating to the box damage, and after a close inspection I found only 3 or 4 very minor scratches. Considering the condition of the box I was quite relieved. I took my time putting the bike together, including the installation of the new handlebars and seat, all of which took about 90 minutes. I had to install the handlebar three times, mostly due to my own lack of attention, but also because the rear brake cable was just barely long enough to accommodate the new handlebar when turning hard left. This is not a defect of the bike or cable, just a challenge for the addition of the longer handlebar. By adjusting the angle of the handlebar and brake lever a bit I was able to get a good fit. The remainder of the project went very well including the test ride which as some of the other reviews mentioned, drew some attention from the neighbors. I made this purchase after having read almost all of the many reviews. After receiving my own bike and putting it together with the simple modifications noted, I have to say that I am completely satisfied and would recommend the process to anyone interested in accomplishing the same outcome. I anticipate adjusting the brakes and derailleur tension after a few miles, as is the case with any bike, but all parts fit nicely, all threads were good, all brackets adjusted easily and I experienced no problems in any aspect of putting the bike together. In regard to the negative comments expressed by others: Yes, it is a heavy bike. If you want something lighter you can expect to be lighter in the wallet as well. Yes, the stock seat was a bit narrow so if you are interested in a cruiser with style that is easy on the back-side, as was the case for me, buy a different seat. For the fit - I am 6'3" and weigh between 210 and 215 pounds and just turned 59, and I have no problem with the comfort level of the bike or proper leg extension and distance from the saddle to the ground. My toes don't hit the front tire when turning (even if I don't have the pedal in the proper position under the ball of my foot) and the pedals are wide enough to keep me from losing my footing. If interested in a more luxurious ride, take a look at the three-wheelers with a basket, but I personally prefer the fun I'm having on this one. Yes, upgrades of virtually any component are possible, but for the approximate $250 I have invested, I am quite pleased with the results- Manage your expectations and be realistic, this bike is a lot of fun, has some great basic features, but is not on the upper-end of component quality. Being heavy it will not be a power house and despite its fat tires, it will still be a bit challenging in sand or mud, although some flotation is provided. Don't expect it to perform like a high-dollar bike, enjoy the savings and have fun!
R**H
Great starter bike.
I bought the Mongoose Dolomite because I am a big guy, and knowing that mods were coming. Assembly was pretty straight forward, and the derailleur needed no adjustment so far. It was pretty much ridable straight out of the box after some assembly. I did replace the plastic pedals before my first ride (MZYRH Mountain Bike Pedals, Ultra Strong CNC Machined 9/16" Cycling Sealed 3 Bearing Pedals). I wish I had waited for the seat replacement to come in. The Giddy Up! Bike Seat made a lot of difference to the ride. The twist shifter, for me. tends to change gearing while I and mounting the bike and and kicking off to start my ride, and there is a pretty big gap in the gearing. The bike itself is pretty hefty coming in at a little over 45lbs, upgrading to a megarange cassette (SunRace 13-34 8sp) should help power this beast over hills with a little more ease. The twist shifter is definitely getting removed and replaced by a RapidFire 8 speed shifter and Shimano Altus derailleur. This is a good bike straight out of the box, and it is was listed in the top 5 by many of the reviews I found for Fat Tire MTBs. Something that appealed to me was, mods are fairly inexpensive, and not that difficult to install if you are handy with tools. There's plenty of helpful videos with recommendations, and walkthrough of the install procedures. So far, I am very happy with my purchase.
F**A
Great bike, but….
I did lots of research spanning over about 18 months on a good bike for heavy guys like myself. I already had a bike but kept putting money into keeping it on the road. As I said, I’m a big dude. My last bike was a Schwinn Ranger. It wasn’t geared towards guys my size, yet it lasted me almost 8 years. It’s still road worthy, but I gave it to someone who is good at fixing bikes for themselves. With all that being said, my research led me to this bike. I read lots of reviews and looked at lots of the questions here on Amazon. After I was sure this bike would support well over my 300 pounds, I pulled the trigger. Originally it was supposed to take 1 month to arrive and I would just keep using my old bike. To my surprise, it ended up coming in about 1 week. The day after it arrived, I assembled it. I bought some of the tiles I thought I’d need, but I ended up only needing an adjustable wrench, Allen wrench, and screwdriver. It took me about 90 minutes to assemble, but I am not handy at all and I needed to redo some of my work. I took the bike out and had a great first ride. It took some getting used to, being it was the first time I rode a fat tire bike. I continued to ride it locally longer and longer each day. It’s a very heavy bike and doesn’t “coast” without pedaling for 2 long, but I knew this from reviews and well, hey, I’m looking to lose weight while riding so more pedaling is better. One day about 2 weeks after I started riding the bike, I felt a snap in my pedals and the pedals kind of fell apart. It looked like there was an issue near the bottom bracket. I pulled over and my friend and I tried finger tightening the pedal unit back into place, to no avail. I was 2 miles from home and the bike was now not able to be ridden, so my 5 mile bike ride ended up being a 2 mile walk home pushing a bike. I took photos of the damage and contacted Mongoose as the only options on Amazon would be to go right to returning. This is not a reasonable option, being the bike would have to be disassembled and re-boxed. Mongoose offered to send me the replacement parts. While this was great, I’m not a bike mechanic with tools, space, or skill to fix it. I asked if I could take it to a local bike shop and have them fix it and they cover labor and parts. They told me they’d cover labor but I have to use the Mongoose parts they send or it would void the bike’s warranty. I took it to my local shop and he estimated $35 for labor to replace the bottom bracket but said the Mongoose parts are known to break and it will break again if I use the parts Mongoose sent. I am taking the bike back tomorrow to have the work done and I will use the Mongoose parts they sent. If it indeed breaks again, I will come back and amend this review. Update to follow.
Z**7
Great bike, great price. No way in the world I would pay over $1000 for a Fat Tire Bike when this monster is available for 1/3rd
This bike is awesome. First of all, this isnt some $1500+, lightweight fancy pants bike. If that is what you are looking for then why are you looking at a $300 bike in the first place. This bike is sturdy and tough, it has some weight to it but that is because its solid. I ordered this bike on a Sunday morning and it arrived on Tuesday morning. Talk about fast shipping. The box had some dings and small tears but nothng that worried me. Taking the bike out of the box, it was nice to see is was very secure. No loose pieces, everything tied and wrapped together. Assemble was a breeze. The rear wheel is already on. Installing the front wheel was easy but take your time. This was the first time I ever worked with disc brakes on a bike and it took a second to get everything to line up. The handle bars just needed aligning and tightening, pedals were properly marked with arrows indication which side and way to tighten, and the seat was quickly installed. FINE TUNING. The rear gears and rear brake were already perfect and didnt need any adjustment. The front wheel did. The rotor was dragging against the pads big time. It took me about 5 minutes to loosen and adjust the front caliper to get the proper alignment and then adjust the pads so the wheel turned freely. No big deal, you can figure it out if you have an inkling of mechanical knowledge. Now ready to air the tires. Make sure you have an electric pump. I put 30psi in each tire with an hand pump and was exhausted. These tires are huge. FIRST RIDE. The brakes will need some adjusting afterwards. Just because they are disc brakes, you will not stop on a dime but the brakes are very effective and a lot better than the old style. There is a lot of road noise from the tires. Wasn't expecting that but can totally understand it. Twist gear shift works great, uphill climbs are a piece of cake in high gear, mid range is great for cruising. Easily completed 6 mile trip first time out with no issues. WHAT I'VE NOTICED. I am 6'4. 295 pounds. The bike says its rated for 250 pounds but it does not mind the extra 45 pounds at all. I felt the hand grips were too small, not big enough around to grip comfortably. The right grip is also a half grip because if the shifter. I did inadvertanely shift grears a couple of times by accident because my hands are big. A trip to the bike shop and a new pair of larger grips with paddles on the end fixed that. Rolled the factory grips off and install the new ones. I loosened the right brake lever and gear selecter and moved them further in so now both handles are full size. Changing gears and braking is no problem and the new grips are much more comfortable. The factory pedals felt very small to me, not wide enough. Bought some BMX pedals which were about an inch and a half wider and now have a very firm platform when pedaling. There are two reflectors on the back frame. My right foot kept hitting one. It had to go. The only thing I think I might do now if see if I cant get handlebars that come up a little higher. Since I ahd the seat so tall, I am leaned over more than I like. Just a comfort thing. I changed out the seat with a wider one cause my butt is wider too but the factory seat is very nice. PUBLIC REACTION. Get ready to answer questions when you go out. THis bike gets the stares from everyone. I've had people pull up next to me in cars and ask me what it is. It draws a crowd so do not leave it unsecure. I even had a discussion where one of those people who spend all the big money on road bikes and wear the bike shorts and race jerseys was criticizing my bike as not being a real bike. He left in a huff when I pointed out my bike didn't cost a house payment, I can go any place he can go but he cant do the same and I get more of a workout making those big ass tires move compared to his skinny ones. I have not seen another Fat Tire Bike where I live, it very unique. I think you will love the bike if you buy it. Just know you are buying a Mongoose and not a Cannondale. Ride it and have fun, like it was designed for.
C**E
Du plaisir sur la neige. assemblage facile selon les instructions
Seul hic, le délai de livraison, et j'ai dû parler avec un représentant Amazon pour accélerer le processus, mais pour le vélo, conforme à la descritpion. Maniable et facile de se déplacer avec celui-ci sur la neige. Je ne regrette pas mon achat.
R**D
Working great after 2 years!
Still works great had to replace front tire tube only.
R**S
just getting into the sport and didn’t want to pay over $1000 from a local bike shop for something I may not like. I had a mongoose BmX back in the ...
Bought this bike simply for the price, just getting into the sport and didn’t want to pay over $1000 from a local bike shop for something I may not like.I had a mongoose BmX back in the late nineties and it was pretty solid so I figured why not. Turns out this thing is super solid! Only a few minor issues. I Had to adjust both brakes, crank and front axle bearings were way too tight so I took the time to adjust everything properly. But all in all very happy with it. If you plan on doing some serious off roading, fenders are highly recommended. If not you’ll get covered those huge tires kick up a lot of debris at high speeds.
R**Y
Good price good deal!
Easy to ensamble, easy to ride, works pretty fine so far. Quality vs price relation so good.
C**E
Amazing Bike!
I am absolutely loving this bike! I received it in little to no time at all and the assembly was super easy. I took it out on a back trail the other day and it rides amazing also. Definitely getting your money's worth with this Mongoose Dolomite Bike. I've even suggested it to my friends who bike with me. Haven't bought this good of a quality bike in a long time!
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