Best Mountain Bikes Under $400 (In-Depth Reviews – 2021)

Mountain Bikes Reviews under $400

Buying a mountain bike is an expensive investment that can sometimes be irrelevant if you don’t know which one to buy. So first you have to identify your needs exactly and know how to meet them.

In this guide, we have chosen the seven best mountain bikes under 400 dollars that offer good value for money. We also have sorted all the mountain bikes we have reviewed on the basis of budget: less than $300, less than $600, and less than $750.

Comparison Table:


  • Speeds: 27
  • Frame Size: 18″
  • Wheel Size: 27.5″
  • Max User Weight: 300 lbs.
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  • Speeds: 27
  • Frame Size: 17″
  • Wheel Size: 27.5″
  • Max User Weight: 330 lbs.
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  • Speeds: 21
  • Frame Size: Small to Large
  • Wheel Size: 24-27.5″
  • Max User Weight: 330 lbs.
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  • Speeds: 21
  • Frame Size: 19″
  • Wheel Size: 29″
  • Max User Weight: 330 lbs.
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  • Speeds: 21
  • Frame Size: 16.5″
  • Wheel Size: 26″
  • Max User Weight: 300 lbs.
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  • Speeds: 24
  • Frame Size: 17″
  • Wheel Size: 26″
  • Max User Weight: 200 lbs.
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  • Speeds: 21
  • Frame Size: 17″
  • Wheel Size: 26″
  • Max User Weight: 200 lbs.
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Best Mountain Bikes Under $400 – At A Glance

  1. HH Hiland Hydraulic Disc-Brake Mountain Bike for Man
  2. SIRDAR S-900 Full Suspension Mountain Bike for Men & Women
  3. Schwinn High Timber Youth/Adult Mountain Bike
  4. Eurobike X9 3 Spoke Wheel Mountain Bike
  5. HH Hiland Lightweight Mountain Bike
  6. Outroad Ordinary Tire Mountain Bike for Adults
  7. Outroad Anti-Slip Mountain Bike for Adult or Teens

1. HH Hiland Hydraulic Disc-Brake Mountain Bike for Man

Frame Material: Aluminum | Frame Size: 18 Inches | Wheel Size: 27.5 Inches | Suspension Type: Front | Brake: Hydraulic disc-Brakes | Speeds: 27 | Weight Capacity: 300 LBS | Weight:  40.65 LBS | Suitable for: 5’7″- 6′ | Assembled: 85%

HH Hiland Mountain Bike under 400

Hiland is a specialized company in the production of e-bikes, bicycles of various types, including models with folding frames, cruisers and mountain bikes. They consequently offer the right solution for any type of needs and environment in which you want to use the vehicle.

The Hiland Hydraulic Disk-Brake mountain bike built-in high quality ultralight aluminum with an inner wire design. The 27.5-inch wheels, durable tires and Lockout suspension fork make it a great bike on mountain roads, highways, and forest ways.

The frame is available in 18 and 19 sizes, 18-inch is suitable for people height up to 6′ tall and the 19.5-inch frame is suitable over 6’6″ tall. The frame also has mounting holes for fenders and racks.

Compared to similarly priced bikes in the market, this Hiland 27.5 looks nice and so far a seemingly sturdy mountain bike with lots of neat features. However, this model is highly recommended for those approaching this world for the first time. It comes with 85% pre-assembled, and required assembly tools are included.

The double shock absorber greatly absorbs the impact with holes and obstacles while the 27-speed gearbox ensures excellent performance. It will exceed your expectations of quality and performance.

The low price is reachable for everyone and it will give satisfaction to the biker in his first experience riding a mountain bike, but we recommend a slightly higher price to be sure of buying quality bikes.

  • Easy to assemble
  • Comfortable free pedals
  • Frame is solid and durable
  • Rides smooth and stable
  • Five Years Warranty
  • Left and right shifter mechanisms not very good because of price
  • The handlebars are pretty very low


2. SIRDAR S-900 Full Suspension Mountain Bike

Frame Material: Aluminum | Frame Size: 17 Inches | Wheel Size: 27.5 Inches | Suspension Type: Fork | Brake Style: Dual Disc-Brakes | Speeds: 27 | Weight Capacity: 330 LBS | Suitable for: 5’7″- 6′ | Weight: 40 LBS | Assembled: 95%


This model from SIRDER is well-known to many bikers, professional and non-professional. This is an excellent quality mountain bike for less than 400 dollars in terms of durability, without any doubt. It is built to be fast and agile off-road and allows any cyclist, from amateurs to professionals, to excel on the race track or to enjoy a ride alone with the great handling and safety that the bike offers.

It features 3 gears front derailleur and 9 gears derailleur which deliver 27 ultra-smooth speeds and easy shifting, finger-type shifter. The front and rear double disc brakes also provide powerful braking control and it won’t easily accumulate dust in the brakes.

The crank is 8 inches long. It is also strong enough to withstand any harsh environment. The sturdy materials also prevent the bike from damage, like on rainy days.

The 27.5×1.95in wide tires with premium aluminum suspension fork helps you to run smoothly over gravel. This is not a high-speed bike, but it is very smooth on the surface, which can allow you a comfortable experience regardless of how rough the terrain may be. It also has a kickstand.

The SIRDAR mountain bike is very lightweight and easy to carry. But it is very strong and the wheels are high-quality. Besides high-quality materials, it has a nice paint job that gives it a stylish and modern look. It comes with a replaceable saddle, suitable for both mountain roads and highways.

The company also offers an excellent one year service warranty. Out of the box, the SIRDAR S-900 mountain bike comes with 95% assembled, just need to attach the front wheel, handlebars, seat, and pedals.

  • Nice looking bike, well made apparently
  • Metal pedals and not plastic
  • Two seats comes in handy
  • Front and rear lights
  • Excellent Shock Absorbers
  • Thicker steel tube
  • 95% Assembled
  • Handlebars are not adjustable
  • Back light is very cheap


3. Schwinn High Timber Budget Youth/Adult Mountain Bike

Frame Material: Steel | Frame Size: Small to Large | Wheel Size: 24 to 27.5 Inches | Suspension Type: Dual | Brake Style: Linear Pull | Speeds: 21 | Weight Capacity: 330 LBS | Weight: 40 LBS | Suitable for: 5’0″- 6’2″ | Assembled: 85%

Schwinn High Timber Mountain Bike

You should know that Schwinn is the original American bike brand since the 19th century. Over the years, Schwinn earns a special place in the hearts and minds of new generations of riders. However, let’s be honest, this is a High Timber Mountain bike from Schwinn, designed for riders who want to take on a variety of terrain.

The suspension fork of the homonymous brand, the Shimano disc and transmission, offering excellent support in competitions at an appropriate price. The resistance and lightness of this model allow you to get the most out of the bike with minimum effort.

It is undoubtedly a safe and reliable mountain bike thanks to the comfortable seating position. Also, the Linear Pull brakes are an excellent alternative to more expensive models.

This model made of an aluminum frame which offers extra durability for those who learn tough courses. However, the steel frame version is also available. The wheels feature alloy rims to deliver extra strength and the tires are design for all-terrain.

The breaks are very nice and the body of the bicycle has good quality. It also features quick release seat post so that riders can easily adjust the height. It is easy to assemble. However, the disc brake caliper arm needs to be readjusted (two hex screws) so it doesn’t bind.

Like all Schwinn bikes, this model comes with a limited lifetime warranty. Overall this is a great designed mountain bike for trails and neighborhood rides.

  • Durable mountain bike
  • Adjustable for different people
  • Good for beginners
  • Easy to assemble
  • Smooth rear shifts
  • Braking works good
  • Seat is a bit small
  • Front shifts clunky
  • Most of the gears feel the same
  • Limited upgrades


4. Eurobike X9 3 Spoke Wheel Durable Mountain Bike

Frame: Aluminium Alloy | Frame size: 19 Inches | Wheel size: 29 Inches | Suspension Type: Front | Brake: Mechanical Dual disc brake | Speed: 21 | Weight Capacity: 330 LBS | Weight: 38.5 LBS | Suitable for: 5’2″- 6’2″ | Assembled: 85%

Eurobike X9

There is no need to go around it, when it comes to choosing an affordable mountain bike the most sought-after features are speed and design. Well, in both situations the Eurobike X9 has achieved excellence, proving to be a valid ally for those who want to move around the city or on secondary mountain roads in a comfortable and fast way.

This version of the brand is really an excellent bike: it is an aluminum frame model with a single shock absorber, very manageable and well-finished aesthetically. In addition to this, the weight (around 38lbs) is really low, allowing the cyclist to carry it wherever he wants and not to tire excessively while pedaling.

It features 21-speed shifting system with double disc braking system which improves braking efficiency and safety. Consequently, it is particularly suitable as a vehicle for urban travel, on preferably paved roads and paths.

This bike will arrive mostly assembled. You need to install the front wheel, pedals, handlebar, seat and air up the tires. It takes 10-15 minutes with their included instruction and tools. The Eurobike X9 mountain bike is suitable for riders between 5’11”-6’4″ in height.

Although the frame is well manufactured and very strong, the graphics on the rims are stickers and not well attached, but you can give them a custom paint looks when they fall off completely.

  • Very well built
  • Easy to put Together
  • Smooth ride
  • Looks great
  • This basic bike comes with basic pedals
  • Most of the design are stickers, instead of paint


5. HH Hiland Lightweight Aluminum frame Mountain Bike

Frame Material: Carbon Steel | Frame size: 16.5 Inches | Wheel Size: 26 Inches | Suspension Type: Front | Brake style: Disc brake | Speed: 21 | Weight Capacity: 300 LBS | Weight: 31.0 LBS | Suitable for: 4’6″- 6′ | Assembled: 90%

HH Hiland Mountain Bike

Another nice mountain bike from Hiland, offering excellent support in competitions at an appropriate price. This mountain bike could also be an ideal choice for everyday riders. And with a size of 26 inches, it is suitable for people over approx. 5’1″ to 6’1 in height.

It allows you to take the advantage of different levels of mountain bike riding and ensure adequate support that can be convenient for those who want a little help when the path becomes more difficult. This mountain bike also allows you to tackle even the most demanding trails in the name of safety and stability.

The resistance and lightness of the bike allow you to get the most out of the bike with minimum effort. It is undoubtedly a safe and reliable model also thanks to the double-disc brakes and is an excellent alternative to more expensive models.

The perfect mechanical double disc braking system offers greater safety to the cyclist by limiting the risk of skidding in the wet. And giving you the stable and strong braking force.

The Shimano’s 24-speed gearbox ensures total control in every situation. The model is a real eye-catcher, which leaves a lasting impression thanks to its high-quality painted finish. Assembly tools and KICKSTAND are also included.

It is not the high-quality bike out there, but it is good. Just beware that your bum will hurt a lot due to lack of suspension on the back wheel, as you will need a new seat or cycling shorts with pads.

  • Solid construction
  • Strong and durable
  • Impressive frame design
  • Lower gear ratios
  • Quite comfortable
  • Not design for expert rider
  • Tires could be better


6. Outroad Double Disc Ordinary Tire Mountain Bike

Frame Material: Aluminium Alloy | Frame size: 17.0 Inches | Wheel Size: 26 Inches | Suspension Type: Front | Brake style: Disc brake | Speed: 24 | Weight Capacity: 200 LBS | Weight: 58.0 LBS | Suitable for: 5’2″- 6′ | Assembled: 80%

Outroad Mountain Bike under $400

This is a great 26-inch wheels mountain bike from Outroad. And if you are willing to try your hand at steep descents mountain bike under $400, this model could be a good ideal choice to test the terrain. You don’t need to spend thousands of dollars to find a stylish front suspension mountain bike.

This Outroad mountain bike made from strong high carbon steel with dual suspension frame. It features 17-inch frame and 6-spoke fashion rims which ensure more safe and fast ride. Although the bike is a little bit heavy, it rides just fine.

The 21-speed gears allow you to switch through the gears very quickly, so you can quickly select a gear for different terrain. The adjustable seat height is suitable for different people. The free pedals and comfortable seat is also included in packages.

The front and rear disc brakes help to keep the cyclist safe even at high speeds and down sloppy terrains. You will also have more control over gear when stopping. However, the maximum recommended weight is only  200 lbs and height 5.2′ – 6.0′.

You will be like the large sprocket gear, which gives a range, avoiding having to adjust it all the time. The tires are solid and all components set up nicely. It guarantees excellent descent and ascent maneuvers in dangerous terrain. Overall, this is a great mountain bike, especially for the price.

  • Fashionable Mountain Bike
  • Portable Kettle Device Design
  • Built in high quality
  • Great Braking System
  • Easy to assemble
  • The handlebar height is fixed
  • Pretty much heavy
  • Cheap grips


7. Outroad Anti-Slip Mountain Bike for Adult or Teens

Frame Material: Aluminium Alloy | Frame size: 17.0 Inches | Wheel Size: 26 Inches | Suspension Type: Front |Brake style: Disc brake | Speed: 21 | Weight Capacity: 200 LBS | Weight: 53.0 LBS | Suitable for: 5’2″- 6′ | Assembled: 80%

Outroad Anti-Slip Mountain Bike

The price to pay to buy the best off-road bike that the market offers is certainly not popular, especially if the goal is to buy a model that makes quality its workhorse. This reasoning is flawless, unless your attention is drawn to the Outroad Bikes mountain bike, which offers some of the features of top-of-the-range products despite the entry-level price.

It is ideal for everyday use, it has fork suspension that offers good support to those who want to better manage the city and country routes, avoiding unpleasant surprises when driving conditions worsen.

The aluminum frame ensure a good level of stability and resistance to impact and wear comparable to that of the more expensive and performing models. Furthermore, it is able to withstand a maximum load of up to 200 lbs and, thanks to the adjustable seat and handlebar, it easily adapts to the user’s physical conformation.

It is undoubtedly one of the best mountain bikes under 400 dollars for teenagers, given that even in terms of construction it has excellently passed the tests of those who have already put it to the test. There is no shortage of essential options for the safety and comfort of the user.

The double cushioning of the wheels is phenomenal, and the Shimano brakes guarantee braking at the right moment. It is truly a prestigious bike, which allows the cyclist to compete in total safety and practicality in a unique lightness.

With all that, the bike runs and rides comparable to a much more expensive bike. The only real trade-off is the grip shifters rather than rapid style shifters make shifting a little more cumbersome.

  • Cheap in price
  • Good build quality
  • Easy to assemble
  • Very sharp looking bike
  • Too many decals on the frame and wheels
  • The instructions are not clear
  • Handlebar hand grips slide out of place
  • Hand Grips are very cheap


Buying Guide: Mountain Bike

  • Riding style and terrain
  • The frame
  • Suspensions and shock absorbers
  • Wheel dimensions
  • Braking system
  • The transmission
  • Men’s or Women’s bikes

Riding style and terrain

The first criterion looks at your type of driving as well as the type of terrain on which you want to go. If you are looking for a versatile bike that can tackle most terrain or need a bike that specializes in a certain type of trail, we recommend a trail bike, as the majority of riders are very satisfied with it.

Budget-conscious cyclists will look for more affordable hardtail bikes instead.

The frame

The aluminum or carbon frame is the first choice you should make. Choosing an aluminum frame offers great cost savings, although it is slightly heavier and tends to bend more easily than a carbon frame. However, if you are looking to exercise in an amateur way, aluminum is the perfect option!

Consider carbon frames if investing in your bike is your priority and if you want to keep it for a very long period of time or for conscientious training such as that of real sportsmen. Carbon fiber lifespan is better than aluminum, which is still an important point to consider.

Suspensions and shock absorbers

The most important criterion for the majority of bikers still remains the choice of the mountain bike according to the suspensions it offers: whether they are complete or more rigid by only being at the front.

Some bikes have a so-called “suspension lockout” feature that allows you to voluntarily turn off the suspensions when you are riding. This can come in handy for anyone who wants to drive in the mountains or up steeper climbs, where the suspensions could absorb too much of the energy.

Wheel dimensions

The wheels of mountain bikes have different heights and obviously, you have to choose the one that best suits your needs. Some models are a standard for children and others for adults.

The wheels should be of good quality, but pay attention to their rim width, as this can make the tires more or less efficient.

Braking system

Typically, the brake system of mountain bikes focuses on disc brakes. Mechanical disc brakes are still the cheapest option when buying your bike, but they are less efficient than their hydraulic or brake fluid counterparts. It is therefore a very important factor you need to be considered.

The transmission

As for the transmission, you will need to inquire about the number of chainrings. If your bike has a dual-chainring drivetrain, that means you’ll have controls on both sides of the handlebars, which is a real plus! It’s simpler, easier to manage and leaves more room for seat post drip control, not to mention the higher sturdiness.

Women’s bikes

Women-specific bikes have bars and cranks on the saddle. Also, they usually have lighter shocks than unisex bikes.

The bulk of mountain bikes are considered unisex bikes, so every bike is suitable for women as well, in theory. The only problem that arises is that the unisex models are designed for average riders.

Generally speaking, men are taller and heavier than women, which makes the design of these types of models unfair.

Many bicycle manufacturers counter this problem by designing female models, and others specialize squarely in designing unique bicycles for women, suitable for their size and weight.

Apart from the aesthetic aspect of the frame, the frame and the shock absorbers are the essential elements that distinguish a women’s trekking bike from a men’s trekking bike. First of all, a bicycle must be adjustable. Secondly, the fork and shock absorber must respond to small impacts and fully absorb the more brutal impacts of rough terrain.

In conclusion

Don’t spend the entire budget on the bike alone, since several other tools are needed for mountain tours, such as a sports suit, protective gloves, but above all a suitable protective helmet. Always consider the additional expenses, unless you already have the remaining equipment.

We know buying a Mountain Bike is more difficult than taking a hybrid bike at a reasonable cost. However, we hope this article helped you understand which bike is best suited to your needs and budget.

Sabbir is a journalist, editor, communicator, blogger, web community manager, explorer… He enjoys learning, meeting people and having the privilege of sharing his knowledge and discoveries. He is a fan of hunting, fishing, riding and exercising. Read More about him.

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