Mongoose Malus Mens and Women Fat Tire Mountain Bike, 26-Inch Bicycle Wheels, 4-Inch Wide Knobby Tires, Steel Frame, 7 Speed Drivetrain, Shimano Rear Derailleur, Disc Brakes
Condition: New
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Extended holiday returns
Returnable until Jan 31, 2026 Learn more
Returnable until Jan 31, 2026 Learn more
This item's return window has been extended for the holiday season: Returnable until Jan 31, 2026
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
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Availability:
In Stock.
Arrives
Sunday, Nov 30
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Color: Silver/Yellow
Features
- Comfortable and stable ride with a steel mountain-style fat tire frame and 26-inch wheels, fit to riders 5'4" to 6'2" tall
- Seamless gear transitions with the 7-speed shifter, ensuring smooth and effortless changes for a more enjoyable riding experience
- Ensure crisp stopping and precise speed control with the front and rear disc brakes, adding an extra layer of safety to your rides
- Conquer any terrain effortlessly with the fat, knobby 4-inch wide mountain tires that effortlessly roll over obstacles, while the light and strong 4" alloy rims provide durability and agility
- Stay in full control out on the trail with the alloy A-head stem and mountain handlebar
Bike Type: Mountain Bike
Age Range (Description): Adult
Brand: Mongoose
Number of Speeds: 7
Color: Silver/Yellow
Wheel Size: 26 Inches
Frame Material: Alloy Steel
Suspension Type: No Suspension
Special Feature: fat tire, mountain bike
Included Components: Bicycle
Bike Type: Mountain Bike
Age Range (Description): Adult
Brand: Mongoose
Number of Speeds: 7
Color: Silver/Yellow
Wheel Size: 26 Inches
Frame Material: Alloy Steel
Suspension Type: No Suspension
Special Feature: fat tire, mountain bike
Included Components: Bicycle
Size: 18 inch / Medium
Brake Style: Disc
Specific Uses For Product: Trail
Item Weight: 35 Pounds
Model Name: Malus
Power Source: Pedal power
Wheel Material: Alloy
Seat Material Type: Polyurethane (PU)
Warranty Type: Limited
Assembly Required: No
Bicycle Gear Shifter Type: Trigger
Global Trade Identification Number: 26
Minimum User Height: 64 Inches
Derailleur Configuration: Rear
UPC: 038675571426
Bicycle Drivetrain Type: Derailleur
Manufacturer: Pacific Cycle, Inc.
Frame Size: 19
Frame Type: Diamond
Item Package Dimensions L x W x H: 64 x 34 x 11.25 inches
Package Weight: 24.95 Kilograms
Brand Name: Mongoose
Warranty Description: Limited Lifetime
Material: Steel
Suggested Users: unisex-adult
Number of Items: 1
Part Number: R5714KMA
Date First Available: February 6, 2017
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Sunday, Nov 30
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.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Color: Silver/Yellow
This bike really surpassed my expectations. I based my purchase off of other reviews found here on Amazon and thought, well this bike should be OK and expected there to be things that I would simply have to deal with since it was an entry-level priced Fat Tire Bike. However, it worked perfectly right out of the box. Now I did do some minor customizations to suit my preferences, but they honestly weren't needed. Those changes were that I replaced the stock seat with a larger more comfortable one. The stock one is of pretty high quality. It's just a bit small and hard like all of the other stock bike seats out there. I swapped out the straight mountain bike style handlebars for custom cruiser handlebars to allow for a more erect sitting position. In changing out the handlebars I found that unless you have immense patience and perseverance then it's easier to simply replace the stock handgrips with new ones. I chose comfort grip handgrips that help alleviate hand fatigue or carpal tunnel syndrome. They worked perfectly. One thing to note here is that I didn't need to change out the shifter lines or brake lines at all like others said when they modified their bikes. I found that simply rerouting the cables slightly left ample line length on them to reach the new handlebars. Before you ride I suggest using some Light Spray Oil On the chain and other moving surfaces. Except for the brakes of course. I also suggest pumping up the tires to the maximum pressure listed on the sidewall if you happen to be riding on paved roads or happen to be a person like me who weighs over 200 pounds because the tires do have a lot of flex at lower pressures and will bottom out on the rim at lower pressures with riders weighing above 200 pounds. The gears do shift really smoothly. However, I will admit that having only 7 speeds is taking some getting used to, but for the average person who goes off road only occasionally, seven speeds are enough. It also does not feel like it's a heavy bike at all. It's obviously a bit heavier than my Schwinn aluminum frame mountain bike, but that is a serious off-road mountain bike. I bought the Mongoose Malus for cruising parks, boardwalks, and my neighborhood. That is where this bike seems to shine because it is really comfortable and an uncomplicated ride. If you're looking to get onto a Fat Tire bike to see if you like it but don't want to break the bank then I can comfortably say that the Mongoose Men's Malus Cruiser Bike is a fine way to do that. If you're a professional bike rider looking for some fat tire powerhouse bike to storm through incredible terrain then you certainly won't be interested in this bike, but then again hardcore bikers looking for specific name brand bikes probably aren't shopping for their bikes on Amazon anyway. Take this review for what it is. One person's opinion of a bike that they like for what it is... A solid entry-level Fat Tire Bike for the Average Joe. Peace.
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Reviewed in the United States on May 10, 2018 by Amazon Customer
Color: Silver/Black
Mongoose is the cheapest bike brand I could find and it certainly weathered well for the year I've been using it. It has great traction in snow, ice, and sand but mostly bought the fat tire bike to support my hefty weight. It took some getting used to at first but eventually got the ease of turning corners quickly.
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Reviewed in the United States on August 7, 2025 by Casey Crayne
Color: Matte Black
The Mongoose Malus Fat Tire Mountain Bike is an excellent choice for riders looking to tackle diverse terrains with confidence and style. Its 26-inch wheels and 4-inch wide tires offer incredible stability and grip, making it perfect for sand, snow, gravel, and off-road trails. The sturdy steel frame and fork provide durability, while the design accommodates both men and women comfortably. Equipped with 7-speed gearing and twist shifters, the bike ensures smooth and responsive gear changes, allowing you to adapt easily to different inclines and surfaces. The disc brakes on both front and rear wheels deliver reliable stopping power, even in challenging conditions. While the bike is a bit heavier than standard mountain bikes due to its durable construction and fat tires, it handles well and offers a smooth ride. Assembly can take some time if you’re new to bike setup, but once ready, it’s a joy to ride. Overall, the Mongoose Malus is a solid investment for anyone seeking a dependable, eye-catching fat tire bike that performs well across a variety of terrains. It’s perfect for adventurous riders who value both functionality and fun in their outdoor pursuits!
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Reviewed in the United States on January 19, 2025 by Purity
Color: Matte Black
I'm on the wrong side 50, a tad under 6 foot, and 310 lbs. Knee, shoulder, and foot issues prevent me from walking, lifting, or even working a heavy bag. So I bough the Mongoose Malus as a way to exercise. What others say is true - it's a basic bike that you'll have to replace parts on. The good news is that the replacements are easy and far cheaper than stepping up to a more expensive bikes. True, it is heavy, but if you're just trying to make it around the neighborhood for a couple of laps a day for the purpose of exercise, then that's actually a good thing. Parts you HAVE to replace: Seat - I went with the Sunlite Cloud-9 Bicycle Suspension Cruiser Saddle, Cruiser Gel, Tri-color Black Brakes - I used shimano brakes and the difference is night and day - I believe its because the stock brakes are so bad. They do not stop you quickly at all. They don't lock up the rotor. Shimano M375s Shifter - Like many, I thought - no big deal, I'll just avoid hitting it. I have larger than normal hands and the shifter takes up half the handlebar - so I upgraded to a shimano SL-M315-8R. Amazing upgrade. Pedals - there wasn't anything horribly wrong with the stock ones, but they were polymer and while the bike is rated for 350, I just didn't trust them to support my full weight if I get up on the pedals. Replaced with PD-EF205 I replaced some other stuff, but I wouldn't say it's required. The seat and shifter are ease of use issues, the brakes and pedals were potential safety problems. The replacement of all parts are easy. If you can assemble furniture, you can replace bike parts. It's 3 metric allens, a driver, a screw driver, and you will need some snips or something that can cut through wire - you have to cut through the wire on the stock brake and shifter assemblies to remove them - and that's fine. A pair of side cutters will work well. If you're fat and looking for a dependable cruiser you can't break - that's what I bought it for and so far this month I've got close to 95k on it, no issues.
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Reviewed in the United States on April 30, 2025 by I hate Sunlight