Top 10 Best Mountain Bikes Under 300 2021 Reviews

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Welcome to Best Mountain Bikes Under 300 Reviews feature. These bikes are budget-friendly. If you’re a person with a limited budget or the person who loves savings these bikes are perfect for you. It is also good for health and the environment. You will get mountain bikes at differing prices, type, and models. Many cheap mountain bikes are available in the market depending on the features that make them unique.

So, if you’re looking for any model that is comfortable,  light-weight, durable, safe, and appealing, then check our reviews with pros and cons of these cheap mountain bikes under 300 to decide immediately which model will meet your needs and requirements. See our recommendations Best Mountain Bike Under 500Best Mountain Bike Under 1000 and Best Mountain Bikes Under 1500.

Comparison of Table

Best Mountain Bikes Under 300

Below are the Best Mountain Bikes Under 300 to buy in 2021.

#HH Hiland 17 Inch Frame Aluminium Mountain Bike

This mountain bike from HH Hiland is perfect for a daily ride to work, cross country journey, or school. With an aluminum frame size of 17 inches and a wheel size of 26 inches, it is perfect for children or adults who are almost 5 feet and 1-inch in height. It is a real eye-catching ride that creates a long-lasting impression on the user due to its high-quality paint finish and well-integrated wheels.

The braking system of the bike contains a double disc brake that gives you sturdy and stable brake technology. The 21-speed gearbox from Shimano offers complete control to the user in any situation. It is a high-quality bike, capable of withstanding special and daily loads.

This mountain bike comes in almost 85% pre-assembled condition along with free pedals. The perfect suspension fork travels 100 mm. The bike also consists of 14 to 28 T cassettes to meet all the user expectations of performance and quality. The 9/16 inches axle pedal is suitable for all feet sized users. 

HH Hiland 17 Inch Frame Aluminium Mountain Bike


  • Frame: Aluminum 17”(with kickstand)
  • Tires: Kenda 26*1.95
  • Derailleur: Shimano TY21 Tourney
  • Brake Type: Dual disc-Brakes
  • Fork: Suspension Fork travel 100mm
  • Speed: 21 Speed
  • 85% pre-assembled
  • Pedals: 9/16 Inch axle

  • Looks great.
  • Easy to assemble.
  • Comfortable. 

  • The front caliber includes some issues when the brakes are released.

#Royalbaby Children’s Front Suspension Mountain Bike

This 20-inch mountain bike from Royalbaby is perfect for 7 to 12 years children. The front aluminum suspension includes disc brakes to create a stable and fantastic riding experience for the user. The eye-catching double curved tube design makes it easier for the rider to get off and on from the bike easily. 

You can easily adjust the handlebar and the seat bar according to the age of the user. The aluminum alloy frame is blue with less weight and brilliant color. The rear and the front disc brakes always save your little one from any unwanted situation in time. It comes with a front suspension fork that is perfect to use for various terrains.

The wide 2.125 inches of tires offer the kid more stability, grip, and comfort on the road. Thus mountain bike comes with a complete guard for the chain to prevent it from soiling or entrapping any clothing to the user’s leg. It comes in 95% pre-assembled condition and requires only five nuts to tighten up for completing the setup. 

Royalbaby Children's Front Suspension Mountain Bicycles


  • Frame: Aluminum alloy
  • Shimano Altus/Acer Drivetrain
  • 20 inches of wheel size
  • Brake: Rear and front Disc braking style
  • Front suspension forks
  • Available in 2 colors

  • Perfect for taller children.
  • Lightweight.
  • Great quality.

  • The tires might get imbalanced if not inflated up to proper PSI.

#Max4out 21 Speed Mountain Bike

This mountain bike from Maxout is perfect for mountain,wasteland and effective on the road, trail, city. The frameset is made of high quality steel make it a durable and stable cruising bike.

The 26 inch wheels feature alloy rims for all terrain tires. This mountain bike features 21-speeds that can handle hilly terrains and the gear change is excellent.

It comes with disc brakes which perfectly increase safety. The pedals and seat include in packages. This mountain bike suitable for riders of height between 5.2 and 6 feet.

It is available in 6 different colors.

Max4out Fat Tire Mountain Bike 21 Speed Shimano Derailleur, with High Carbon Steel Frame, Double Disc Brake and Front Suspension Anti-Slip Bikes with 26 inch Wheels, Black


  • Steel frame
  • 26-inch wheel
  • Alloy rims
  • Shimano rear derailleur
  • Front suspension
  • Speed: 21 Speed
  • 7-speed transmissions
  • Front and rear v-brakes
  • Comfortable seat
  • Free pedals
  • Available in 6 colors

  • Easy to put together.
  • Great quality.
  • Excellent customer service.

  • No cons.

#Dynacraft Slick Rock Trails 26″ Mountain Bike

This trail mountain bike from Dynacraft is perfect for long rides. It features a 21-speed index derailleur along with Shimano grip shifters. The Shimano grip shifters make changing gears easy.

This full-suspension mountain bike comes with sufficient padding on the saddle. The front and rear v-breaks provide you the stopping power that you want to control the speed of the bike.

The adjustable seat post allows you to get a comfortable height that completely suits you. If you feel like cycling maniac, who would rather hit trails on a mountain bike, then the Dynacraft Slick Trail makes a great choice.

Dynacraft 26' Slick Rock Trails Bike


  • Full suspension
  • Shimano grip shifters
  • Front and rear v-brakes
  • Speed: 21 Speed
  • Adjustable seat post

  • Easy to put together.
  • Great value.

  • No cons.

#Roadmaster Granite Peak Mountain Bike

This mountain bike from Roadmaster is perfect for children. The steel frame and suspension are made to help absorb a lot of the bounce from riding over a broad selection of terrain.

The strong alloy wheels add durability of this mountain bike. The 18-speed shifters make it perfect for riding no matter what area because the rider can go as fast or as slow as they want.

The brakes that come on this mountain bike make for an easy stop. It comes with a 3-piece crank that means less disturbing maintenance on your end.

24' Roadmaster Granite Peak Boys' Mountain Bike


  • Frame: Steel Frame
  • Front suspension fork
  • Strong alloy wheels
  • 18-speed gearshift
  • 3-piece crank
  • Brakes: Linear traction brakes

  • Great quality
  • Easy to assemble.
  • Perfect for children.

  • No cons.

#Huffy Hardtail Mountain Bike for Boys

This hardtail mountain bike from Huffy is ideal for ages 5-9 and rider height of 44-56 inches. The frame is made from steel which is durable. It comes with 20″ x 1. 95″ tab tires handle pavement and dirt with ease.

The kilo 1200 suspension fork is dead handy, especially for the boys that love to ride on bumpy and rough roads. The SHIMANO TZ-31 rear derailleur connects with the micro-shift twist shifter to deliver 6 speeds for climbing, descending, and generally acceleration.

The linear-pull hand brakes deliver stopping power. The slight-rise handlebar of this mountain bike allows upright riding to reduce back and shoulder strain.

This mountain bike is available in 6 different colors. It is also available in 21-speed.

Huffy Kids Hardtail Mountain Bike for Boys, Stone Mountain 20 inch 6-Speed, Metallic Cyan (73808)


  • Frame: Steel Frame
  • Shimano TZ-31 rear derailleur
  • 20″ X 1. 95″ Tab tires
  • kilo 1200 suspension fork
  • Brake: Linear pull hand brakes
  • Speed: 6 Speed
  • Slight-rise handlebar
  • Ideal for ages 5-9
  • Available in 6 colors

  • Good quality.
  • Great for the price.
  • Comfy.

  • Not great for long rides.

#Kent KZ2600 26-Inch Dual-Suspension Mountain Bike – Best For Men

Kent’s Dual Suspension Mountain Bike is ideal for men who need the larger bike dimensions without a heavy price tag. This well-constructed bike is a perfect ride for beginners as well as experienced riders who want a bike for everyday cycling activities.

It comes with the Shimano 21-Speed gear Shifters with Rear Tourney Derailleur that assures shifting between the wide range of gears easily and effortlessly even in the fast riding conditions. It comes with front and rear 65 mm travel forks especially hand-welded tightly to the bike frame.

Dual suspension mountain bikes tend to be pricier than hardtail rides, but this bike provides the full dual suspension experience for a bargain. Stopping is controlled by disk brakes on the front and rear.


  • Frame: Steel Frame
  • Wheel Size: 26 Inch
  • Shimano Twist Shifters
  • Alloy Wheel Rims
  • Type: Full Suspension
  • Brake: Front and rear V-brakes
  • Speed: 21 Speed
  • Suspension fork 65mm travel
  • Easy to assemble
  • Good quality.
  • Great bike for the price.

  • The seat is hard.

#Mongoose R2780 Dual Full Suspension Bicycle – Best Full Suspension

Full suspension mountain bikes are must-haves for the tackling tough trails and obstacles that a hardtail cannot handle. This Mongoose’s Impasse comes with full-suspension traction & stability for fearless, affordable mountain biking.

The frame is made of aluminum and is solid. With 29” wheels, you will be ready for outdoor adventure without breaking the bank. It comes with 21 levels of speed and Shimano Rear Derailleur.

Alloy disc brakes allow you to have perfect control over your bike. SRAM Twist Shifters makes it easy for the user to shift through the gears efficiently.

Mongoose Impasse Mens Mountain Bike, 29-Inch Wheels, Aluminum Frame, Twist Shifters, 21-Speed Rear Deraileur, Front and Rear Disc Brakes, Silver


  • Frame:  Aluminum frame
  • Wheels: 29 inch
  • Dual suspensions
  • SRAM twist shifters
  • Brake: Alloy front and rear disc brakes
  • Speed: 21 Speed

  • Good service.
  • Good quality.
  • Looks great.

  • Heavy.

#Vilano Blackjack 3.0 29er Mountain Bike 

If you looking for a versatile bike which can handle anything from hard trails to asphalt, the Vilano blackjack is perfect for you. It has a hand-built butted 6061 alloy 29er hardtail frame that supports a wide range of people sizes for a comfortable ride.

It comes with Shimano 8 Speed EF-51 integrated shifter that acts as the brake lever. It has mechanical disc brakes that enable fast stops even on a rugged trail.  The aluminum frame makes this bike strong and fits for a wide range of user sizes.

It comes with suspension 80mm travel fork that gives it lockout abilities.

Vilano Blackjack 3.0 29er Mountain Bike MTB with 29-Inch Wheels


  • Frame: Aluminum
  • Wheels: 29 inch
  • 8 speeds with Shimano system
  • Suspension 80mm Travel. Lockout
  • Brake: Mechanical Disc
  • Speed: 24 Speed
  • Rims: Double Wall Alloy

  • Easy to put together.
  • Extremely adjustable.
  • Lightweight Bike.

  • No kickstand.

#Merax Falcon Full Suspension 21-Speed 26-inch Mountain Bike

If you are looking for extremely affordable full suspension mountain bike then the Falcon Full Suspension Mountain Bike is an excellent option for you to consider. It comes with 21 different speed settings that provide the user with a wide type of gears to choose from.

You can enjoy riding this mountain bike on rough, rugged mountain trails and well as on plain city roads with very ease and comfort. It’s Linear pull breaks provide enhanced stopping power.

The 21-speed derailleurs deliver ample speed. It is lightweight and easy to control. Max weight limit is 330lbs. It comes with a 1-year warranty.

Merax 26' Mountain Bicycle with Suspension Fork 24-Speed Mountain Bike with Disc Brake, Lightweight Aluminum Frame


  • Frame: Aluminum Frame
  • Wheel Size: 26 Inch
  • Shifter: Shimano Revo Shifter
  • Type: Full Suspension
  • Brake: Linear pull brakes
  • Speed: 21 Speed
  • Dual Suspension
  • Weight capacity: 330 lbs
  • 1-year warranty
  • Colors: Black & Blue, Grey & Gree, and White & Red

  • Strong frame.
  • Easy to put together.
  • Good quality.

  • Heavy Bike.

Buying Guide:Best Mountain Bikes Under 300

This buying guide will help you let you know the necessary things while you are in the market.

Frame Materials: Frame material should be strong and durable. Mountain bike frames are made either aluminum or steel. Both aluminum and steel are strong and durable. The steel is heavier metal than the aluminum so aluminum bike has light features. The heavy equipment has more stability. Aluminum bikes are sturdy, lightweight and appropriate for speed lovers.

Mountain Bike Types: This is the most important factor you need to know. There are various types of mountain bikes for different purposes. It means there is a confusing range of bikes to choose from.

  • Hardtail: Shocks at front
  • Rigid: Without any suspension
  • Full Suspension: Shocks at the back and rear

Wheel Size: It is an important feature to consider. The most common size of wheels for MTB is 26 inches, 27.5 inches, and 29 inches. 26-inch wheel is the ideal size and it is perfect for the beginners because they provide more control. The size you get depends on the kind of terrain you are riding and on your daily plans and activities.

Gear: Mountain bikes come with single gear to 30 or more gears. It has three chainrings to provide a variety of easy gears. It is easy to change gear numbers whenever you require.

Suspension: Mountain bike with the suspension will offer a more enjoyable riding experience as you will be more comfortable. You know your mountain bike is high quality when it has the suspension in both front and back. That means it will absorb impact evenly and keep your whole body safe.

Break: Disc brakes are complicated and powerful. It delivers maximum power in mud and rain. V brakes are lightweight and easy to use. Maintaining the V brakes is an easy task. You just require to change cables and pads when needed.


As you can see that we have compiled a brief yet explained the list of Best Mountain Bikes Under 300 that can be easily available in the market. You should consider the wheel size, construction material, suspension, and what you will be using the bike for. Hope above list of the best cheap mountain bikes review and buying guide will be helpful to find an exciting mountain bike for you.


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