Best Mountain Bikes Under $300 in 2021 Review

Whether you are currently limited by your budget or you simply want to try budget-friendly options first on your mountain bike, it’s important to know your options. Mountain bikes are designed primarily for rough terrain. Designed to be durable and comfortable, some of these bikes cost a lot of money. But given today’s technology, brands have come up with mountain bikes under 300 dollars. But of course, not all MTBs are the same. Expect some to have better specs than others.

To give you a better idea about your options, here are some of the best mountain bikes under $300 that you can find in today’s market.

Best Mountain Bikes Under $300 Review

Schwinn GTX Comfort Hybrid BikeSchwinn GTX Comfort Hybrid

The Schwinn GTX Comfort Hybrid Bike is designed for a lot of beginners. However, despite being an entry-level mountain bike, the Schwinn GTX Comfort Hybrid Bike can meet the needs of intermediate riders.

One of the best features of this mountain bike is comfort. As suggested by the name, it was designed to lessen the stress on the user’s back especially when dealing with a bumpy road.

This bike features rigid suspensions. Though it pales in comparison compared to the steel fork, that’s what makes the Schwinn GTX Comfort Hybrid Bike a strong contender for the best bicycle under 300.

It is made of an aluminum frame that is both lightweight and durable. It also comes with a 21-speed option with its Shimano derailleur to ensure that you’re having an easier time when you ride your bike. For its price, the Schwinn GTX Comfort Hybrid Bike uses disc brakes that are known for providing superior stopping power.

A common concern from consumers is the questionable quality of some parts such as the rear derailleur and the rims that don’t compare usually to some of the best higher-end mountain bikes out there.


  • Durable design on the frame
  • Includes a 21-speed option to help you in steep terrains
  • Comfortable to ride


  • Some parts have questionable durability

Diamondback Bicycles Trace St Dual Sport BikeDiamondback Bicycles Trace St Dual Sport

The Diamondback Bicycles Trace St Dual Sport Bike isn’t only one of the best mountain bikes for budget-conscious buyers but this is something that can be considered one of the best-rated mountain bikes in its price range. It packs a punch without giving your wallet a hard time.

So what can you expect from the Diamondback Bicycles Trace St Dual Sport Bike? First, you have the 60661-T6 aluminum alloy frame that is known for its strength and durability. Also considered as one of the best mountain road bikes, this bike is designed for both the road and the rough terrain.

The Diamondback Bicycles Trace St Dual Sport Bike can easily pass as a road bike because it’s comfortable to use. And when used in rugged terrain, you have the reliable 700cc tires that provide superior traction.

Steering the bike is something that is even more impressive. You get a high tensile steel fork that allows the rider to get a responsive experience from the bike plus you also have alloy linear-pull brakes that can slow you down or get you to make a full stop right when you need to.

There is no problem getting this bike in uphill climbs regardless if it’s the pavement or the rough terrain. You get the Shimano 3×7 speed drive train that allows you to have the right gear for the rider. This bike is also made for both short and tall individuals. It caters to users from 5’4” to 6’4”.

So what could be the downside to riding this bike? The Diamondback Bicycles Trace St Dual Sport Bike isn’t something perfect. Some users find the wheels to be less desirable compared to the other parts of this mountain bike.


  • Good for average-sized to tall individuals
  • Durable construction
  • Easy to maneuver
  • Perfect for both flat and uphill climb


  • Wheels are seen by some consumers to be unimpressive

Mongoose Status Mountain BikeMongoose Status

Mongoose Status Mountain Bike is a bike that caters to both men and women. It is known for its superb construction and design that caters not only to novice riders but even intermediate riders. Despite the price, many consider this to be one of the best mtn bikes in the market today.

And why is it the case? First, it has an aluminum MTB frame that comes with hydroformed tubing. It makes the front suspension durable especially if you plan on using the bike on rough terrains. Novice riders dub this as the best mountain bike for beginner particularly because of the 21-speed Shimano rear derailleur present in the Mongoose Status Mountain Bike. This makes it easier to climb uphill and to lessen the effort especially on those who are just beginning to enjoy mountain bikes.

This bike is powered by both front and rear V-brakes to guarantee your safety especially when you are moving too fast. In most $300 mountain bike options, you only get one brake. But of course, we’ll never know what could happen. The last thing that you want to happen is to end up losing your brakes, especially when you are hitting downhill terrains. This can easily cause accidents or even fatalities.  But with the rear and front V-brakes, you can be sure that there is a brake that will slow you down or stop your bike. The rims are also durable and lightweight. Made of alloy material, it is perfect especially for rough handling and for tough roads.

But what are the common concerns that you need to remember before buying this bike? There are some complaints regarding parts of the bike giving out after using it for a while. The brakes, in particular, have been getting a lot of complaints with users reporting brakes malfunctioning.


  • Durable frame
  • Lightweight rims
  • 21-speed options for uphill climbs


  • Reports of brakes malfunctioning

Schwinn Network Hybrid BikeSchwinn Network Hybrid

Schwinn Network Hybrid Bike is a great lightweight option for those who want to have an easier time conquering difficult terrains. It’s a bike that is designed for both average-sized individuals to tall individuals. It is a perfect fit regardless if you’re 5’4” or 6’2”. This bike also made use of durable materials that you typically see from the best bikes under 300. It has an alloy frame that is coupled with Schwinn suspension fork that can promote stability on your ride regardless if it’s a rough outdoor terrain or your paved highway.

But what makes it a tough contender for the best mountain bike for trails is the Shimano 21-speed  options. You get the Shimano rear derailleur that will offer riders with smooth gear trainstions whenever you need to take a break from pedaling. And even if you feel tired, you can easily switch the right gear to match your needs. You can easily conquer tough hills to climb. It also makes use of alloy linear-pull brakes that is reliable regardless of the road you are traversing.

It is also comfortable to use with its spring saddle and the ergonomic grips perfect for long hours of riding the bike. And if you are worried that you have to go low when you are riding the Schwinn Network Hybrid Bike, this won’t be the case. You get to enjoy an upright posture mimicking that of a sportive road bike.

Assembly is easy to do even for those who don’t have any experience building their bike. But one of the biggest concerns in the Schwinn Network Hybrid Bike is reports of the chain coming off making it difficult to switch gears.


  • Durable alloy for tough terrains
  • 21-speed options for easy maneuvers even in steep hills
  • Promotes comfort by allowing the rider to have an upright posture


  • The chain comes off easily

Merax FT323 Mountain Bike 21 Speed Full Suspension Aluminum FrameMerax FT323 21 Speed Full Suspension Aluminum Frame

A dual suspension design is a good way to lessen the vibration on your bike. It is a great feature not found in all mountain bikes. The Merax FT323 Mountain Bike is one of those MTBs that feature dual suspension specs. This guarantees the riders of a smooth ride especially when they end up taking the bike on trails. It has also made use of a Shimano 21-speed derailleurs and shifters that allow the rider to use the most comfortable gear depending on the scenario.

Just how durable is this bike? The bike has a 6061 Heat Treated alloy frame that allows the Merax FT323 to have a 330-pound weight allowing even large individuals to enjoy the ride. It also made use of linear-pull brakes that are known for its decent stopping power.

Once the bike arrives at your door, the bike is already 85% assembled. Assembly is fairly simple but it is highly suggested that you get the help of your local bike shop just to make sure that everything is working as it should.

However, the seat has to go. It is quite uncomfortable seating on this bike. It makes you feel that you want to get off the bike already. But after finding a more comfortable seat, then this bike can easily be at the top of the best bikes under 300.


  • With a great suspension that absorbs vibrations
  • Durable frame
  • Can support even heavy individuals


  • Seat is uncomfortable

Merax 26″ Mountain Bicycle with Suspension Fork 24-SpeedMerax 26" with Suspension Fork 24-Speed

One of the main concerns for beginners is dealing with difficult roads. They sometimes find themselves spent after going uphill. As a rule of thumb when buying the best beginner road bike under 300 is to check the speed options. Most of the top mountain bikes under 300 only have 21-speed options. But with the Merax 26” Mountain Bike, you get to enjoy 24 speeds. With its Shimano 24-speed derailleurs and shifters, you get to shift smoothly. It has that responsive feel that allows you to get the right gear at the right time.

Now, it offers dual disc brakes that allow above-average stopping power in contrast to other mountain bikes. And because you have dual disc brakes, you can ride with peace of mind.

You will also notice that the frame is made of 26” lightweight aluminum frame. Coupled with a  high-performance front suspension fork and to give a smooth performance even in rugged terrains. The total weight for this bike is only 40 lbs which is something that can is quite helpful for riders especially when you want to ride for hours or whenever you are trying to explore difficult terrains.

The biggest concern is the tires that aren’t exactly best for rough terrains. However, it will definitely pass potentially as the best road bike under 300. But is it the best adult mountain bike? Apart from the tires, the pedals also feel a bit cheap.


  • It only weighs 40lbs
  • It has 24-speed options
  • Durable frame


  • Pedals feel cheap
  • Tires aren’t made for the rough terrains


Huffy Hardtail Mountain Bike

Huffy Hardtail

The Huffy brand is known among bike enthusiasts since the late 1800s. And it isn’t surprising why the Huffy Hardtail Mountain Bike is a favorite among intermediate riders.  It is available in 20 to 26-inch variants catering to a number of riders. The Huffy Hardtail Moutain Bike is ideal for users aged 13 years old and above with a minimum height for riders at 5 feet. And also, it is a perfect mountain bike option for the ladies.

The construction of the Huffy Hardtail Mountain Bike is something that is above average for its price range. It made use of steel frame plus it has Kolo 1200 suspension fork handles that were designed for smoother rides. It also made use of the Shimano TZ-31 rear derailleur together with the micro shift twist shifter to promote 21-speed options that can help the rider to have a more comfortable time traversing uphill or during acceleration.

Another great feature of the Huffy Hardtail Mountain Bike is that you don’t have a difficult time riding this MTB. It has a slight-rise handlebar that allows the rider to have an upright position, minimizing strains on your back or on your shoulder.

Now, there are downsides to this bike. For instance, there are those who commented that the gear system doesn’t live up to the standards of the best mountain bikes. Changing the gears will give you minimal changes making it frustrating especially if you have a beginner who isn’t exactly conditioned to take on difficult terrains. On top of that, there are some consumers that complained about the chains coming off.


  • Durable design
  • Available in different sizes
  • A good option for teenagers


  • Chain coming off
  • Minimal changes in the gears

Mongoose Dolomite Fat TireMongoose Dolomite Fat Tire Mountain Bike

The Mongoose Dolomite Fat Tire mountain bike is the type of mountain bike that offers superb traction meant for those who are particular about stability whenever they ride regardless if it’s the road or the dirt. The Mongoose Dolomite Mountain Bike is a steel-framed mountain bike that was made with rough handling in mind.

It is a handy bike not only for intermediate riders but even for those who are just beginning to explore the outdoors. And apart from that, the Mongoose Dolomite Fat Tire Mountain Bike is also a good option for the daily commute. Unfortunately, it only has 7-speed options which means that it isn’t as dynamic as other MTBs in the market. It is common to see the best men’s mountain bike under 300 to have 21-speed options.

This bike made use of Shimano rear derailleur that allows you to shift gears smoothly depending on your preference when conquering both easy and difficult terrains. This bike has both front and rear disc brakes allowing the rider to stop or to slow down whenever they need to. And because you have both front and rear, you can lessen the chances of encountering an accident.

The shifting mechanism tends to get noisy according to some riders. And also, the seat tends to be a bit tiny. You might have a problem using this bike if you are big or if you are looking to use it for long hours on the road.


  • 7-speed gear options
  • Thick tires to handle different terrains
  • Stable when riding
  • Durable frame


  • The seat is a bit tiny

Eurobike Mountain Bike G7 21 Speed 27.5 Inches Wheel Dual SuspensionEuro G7 21 Speed 27.5 Inches Wheel Dual Suspension

One of the best 27.5 bikes that you could get your hands on is the Eurobike Mountain Bike G7. This bike is perfect for riders 5’7” to those who are over 6 feet tall. On top of that, this bike can also support large riders for up to 330 pounds. Unlike other bikes that you see on your typical top mountain bikes for adults list online, what is unique about the Eurobike Mountain Bike G7 is the fact that it is foldable. Once collapsed, you can bring it with even during your commute to work. This is also arguably the best MTB if you don’t have the luxury of space in your own home.

This bike also offers dual suspension. It means that it can tolerate the rough roads whenever you are going to take this bike outdoors. It is also something that can help promote comfort. And since it comes with a 21-speed shifting system, users won’t have a difficult time whether they are riding uphill or they need to accelerate fast. This is also a bike that comes to your door 85% assembled. It is easy to assemble, but if you are still not confident, you can have it assembled by pros in your local bike shop.

Performance-wise it won’t bother you whether you run over some rocks or trees. It has good brakes as well thanks to the large disc brake rotors. It means that you can be confident whether you need the bike to make that full stop or you simply need it to decelerate.

So what’s the downside to this design? Just like the 27.5 mountain bike reviews, this is a bulky bike to have. The purpose of having a foldable bike is to keep everything compact. Now, this is larger than your typical foldable bike in the market. It can be a problem if you plan on carrying this bike whenever you are riding the bus or the local transit to work.


  • With good brakes
  • Foldable
  • 21-speed option
  • Easy to assemble


  • Bulky when folded

Diamondback Bicycles Atroz Full SuspensionDiamondback Atroz Full Suspension

The Diamondback Bicycles Atroz Full Suspension Mountain Bike is known for its smooth performance and durable construction. The Atroz mountain bike made use of a hand-built 4” travel aluminum alloy frame that is known for its ability to tolerate rough roads and long hours on the road. On top of that, it also comes with a durable RockShox Recon RL 130mm travel fork coupled with Monarch R air rear shock that can keep the ride smooth.

Available in small, medium, and large, the Diamondback Bicycles Atroz mountain bike is perfect for riders from 5’4” to 5’11”.

You also get to enjoy this bike with the Shimano MT200 hydraulic disc brake rotors found in the front and on the rear. It gives the bike the stopping power that it needs to whether when you are running full speed or simply cruising. And when it comes to riding uphill, you get the SRAM NX 1×11-speed drivetrain giving you the freedom to choose the right gear for the road you are dealing with.

What are the issues that you get to see online? You have the handlebars that are a bit wide. But this won’t be that of a problem. Next, you also have seats that aren’t comfortable.


  • Easy to ride even during uphill
  • Decent brakes
  • Durable alloy frame
  • Smooth ride even on rough roads


  • The seat isn’t comfortable

Roadmaster – 26 Inches Granite Peak Men’sRoadmaster - 26 Inches Granite Peak Men's Mountain NAVY

A good candidate for the best overall bike is a mountain bike that offers great control and something that offers great overall construction. The Roadmaster Granite Peak Mountain Bike easily is something that has become a popular option among hardcore outdoor enthusiasts.

The Roadmaster Granite Peak Mountain Bike exhibits great craftsmanship with its steel frame constructed with rigidity in mind. The reason is to allow the rider to not worry whether he or she is going to use this bike on a dirt road or your daily commute to work. It has also been integrated with a high-quality suspension fork that makes riding in uneven paths smooth. It gives you the maximum control that you need.

It has a wide range of 18-speed options thanks to the Shimano rear derailleur and the 3-piece mountain crank. Now, this makes it easy to transition from flat roads to uphill climbs. Transitioning from one gear to the next is quite smooth and offers no trouble. Though other bikes offer 21 to 24-speed options, the Roadmaster Granite Peak is still a decent pick in this department. Even novice riders can enjoy this bike whenever they are dealing with difficult terrains.

When it comes to its aesthetics, this bike looks good too. Apart from being a tough contender for best-looking mountain bike, you also get to enjoy lightweight and durable alloy 26-inch rims. It provides great control and maximum durability especially when taken outdoors.

Now, let’s discuss some of the negative points about the Roadmaster Granite Peak Mountain Bike. One, you have the uncomfortable seat which isn’t exactly surprising among mountain bikes. Next, you will have to adjust the brakes regularly if you want to have it perform in its peak condition. And lastly, some customers mentioned that some parts are falling off.


  • Durable rims for rough roads
  • Easy to ride in different terrains
  • Durable frame for tough terrains


  • Seat is uncomfortable
  • The brakes need constant adjustments

Mongoose Malus Fat Tire Bike with 26-Inch WheelsMongoose Malus Fat Tire with 26-Inch Wheels

Fat tires have become a popular option among good mountain bikes under 300. The reason for the popularity of fat tire MTBs in the market is the fact that it offers better traction and stability compared to your usual tires. The Mongoose Malus Fat Tire Bike is a good example of such. It comes with 4 ¼ inch knobby tires that can help give you the edge whenever you are riding in different terrains. And because of the larger surface area of the tires, it also makes it easier to hit the brakes to slow down or to make a complete stop.

The Mongoose Malus Fat Tire bike made use of a steel frame designed to take punishment on the road and different terrains. On top of that, it has that low-rise handlebar that allows the user to position himself in the most comfortable position.

This mountain bike has a set of disc brakes that allow riders to have great control when it comes to the speed of their bike. And whenever you are trying to conquer difficult terrains, you can select the right gear that fits your preference thanks to its 7-speed gear system with the Shimano rear derailleur.

Now, there are some things that Mongoose needs to improve on when it comes to the Malus Fat Tire Mountain Bike. The top concern is the seemingly cheap parts of the bike such as its front wheel axle. And also, just like your typical mountain bike under 300, it comes with uncomfortable seats. But the good news is that it will still pass for a novice bike. This is why you don’t get to see a lot of people complain about these things.

Despite the drawbacks that we’ve mentioned, you can still argue that it can be included for best mountain bikes for trails based on its design and the stability that it offers the market.


  • Stable in different terrains
  • Easy to adjust the gear for flat and uphill climbs
  • Durable steel frame


  • Some parts seem cheap

Head Rise Mountain BikeHead Rise

The Head Rise Mountain bike is available in both 17.5” and 20.5” frame versions. And yes. it isn’t exactly made for tall a good number of adult riders. However, this could easily be a good entry-level women’s mountain bike. Based on its size, female riders and teenagers can have an easier time controlling the bike giving you them a memorable riding experience regardless of the road that they choose to conquer.

The frame and the fork of the Head Rise Mountain Bike are made of aluminum materials. This offers a lightweight and durable design for its users. For the wheels, you get 29-inch alloy rims that can tolerate rough handling especially for someone who loves outdoor adventures.

The Head Rise Mountain Bike has the Shimano SL-310 Shifters with 24-speed options. It has the Shimano RD-310 rear derailleur and cassette making it easier for riders to conquer difficult roads. It also made use of Zoom DB-280 front and rear disc brake to ensure your safety whether you need to slow down in an intersection or to make that full stop.

This bike features an aluminum seat post and a WTB Rocket V saddle. The downside with aluminum is that it doesn’t exactly dampen vibrations whenever you are riding the bike. And with the lack of luxury features that you typically see from more expensive bikes, this is something expected. But if there is anything that could’ve made a huge difference is the presence of a kickstand. There is no kickstand in this bike.


  • Wide range of speed selections
  • Lightweight and durable design
  • Good stopping power by its rear and front brakes


  • No kickstand

Diamondback Bicycles Overdrive HardtailDiamondback Overdrive Hardtail

Diamondback Bicycles Overdrive Hardtail Mountain Bike has that classic trail bike design that allows the right kind of stiffness to withstand difficult outdoor trails but still offers the best performance to its users. It has simplified rides especially for those who are only trying to learn the beauty of trail biking.

For starters, it made use of lightweight but durable aluminum for the frame. It also has the RockShox Reba RL fork that provides the stiffness needed to tolerate the tough trails. And when it comes to climbing stiff uphill terrains, you get the SRAM NX/GX 1×11 drivetrain that allows you to shift effectively to the right gear. This skips the complex traditional front derailleur that you see in a lot of mountain bikes.

This bike only weighs around 29.5 pounds while other best trail bikes in the market could weigh so much more. It also means that it is easier to pedal allowing you to save your energy, especially when riding for long hours. It also offers great stopping power thanks to the Shimano MT500 hydraulic disc brakes.

There are some riders who consider the tires to be a bit cheap. And though most of its features could easily pass as a superior quality entry-level mountain bike or even the best mid-range mountain bike, you get what you pay for.


  • Durable design for tough terrains
  • Lightweight
  • Good brakes
  • Great gear options


  • Tires looked flimsy

Merax Mountain BikeMerax FT323 21 Speed Full Suspension Aluminum Frame

The Merax Mountain Bike is a good mountain bike if you are looking for something that offers durability and smooth performance. It is considered by some as the best aluminum mountain bike for a number of good reasons. For instance, it made use of a strong and reliable aluminum MTB frame and suspension fork that can help support riders up to 330 pounds. On top of that, the suspension fork also allows you to enjoy the toughest terrains especially when you decide to take it off-road.

When dealing with steep hills or whenever you feel tired, you can always shift your gears thanks to the 21-speed option that this mountain bike offers. It made use of a Shimano rear derailleur that offers smooth transitions when needed.

Merax Mountain Bike is also known for having decent stopping power with its linear-pull brakes. These V-brakes allow you to slow down or to make the complete stop.

The assembly isn’t exactly simple, especially for first-time bike owners. You might want to skip the assembly and get the help of your local bike shop.


  • A durable and lightweight frame
  • The fork does a good job in handling tough roads
  • Can support 330 pounds


  • Complicated assembly

Diamondback Bikes Line Hardtail Mountain BikeDiamondback Line

The Diamond Bikes Line Hardtail Mountain Bike offers a lightweight but durable design that can keep up with riders that have an active lifestyle. It has a reliable 6061-T6 aluminum hardtail frame that has been shaped in such a way that you don’t can minimize strains on your back. It allows the user to have an upright form similar to the sportive bikes in the market.

The front suspension is also something that makes this one of the top hardtail mountain bikes. It made use of the SR Sun Tour XCR 120mm travel fork that does a good job of providing a smooth ride for the riders. It also made use of a Shimano 1×9 single-ring drive train to help riders conquer hills. But of course, compared to the other mountain bikes, it doesn’t have broad options such as those with 21-speed or 24-speed configurations.


  • Durable aluminum frame
  • Lightweight design
  • Comfortable geometry


  • It doesn’t have a broad selection of speeds


There are a lot of budget-friendly mountain bikes under 300. But even if it is priced affordably, it doesn’t mean that you have to sacrifice your overall experience riding the mountain bike. Nowadays, MTBs are available in different shapes and sizes. You will be surprised by the features that some of the best inexpensive mountain bikes offer to the table.

But before you even make a choice, keep in mind that riders have different preferences. Some like bikes that have great suspension while others want something that can be folded. Whatever is your choice, be sure to compare the different bikes.

Different brands have different strengths and weaknesses in their designs. Some provide better comfort and ergonomics while others focus more on performance. By doing your research and comparing at least five MTBs on our list, you will be able to get the best adult mountain bike for your needs.