10 Best Cheap Mountain Bikes 2025 in the United States

The Mongoose Argus ST is a solid choice for beginners or casual riders looking for an affordable mountain bike that can handle various terrains. It features a sturdy 17-inch alloy steel frame, which gives the bike durability but adds some weight, so it’s not the lightest option out there. The bike uses a rigid suspension, meaning there’s no shock absorption, which keeps things simple and low maintenance but may feel less comfortable on very rough trails. The wheels are 26 inches in size, a standard for mountain bikes, making it suitable for riders between 5'5" and 6'0". Its standout feature is the fat tires (26 x 4 inches), which are wider than average and offer excellent grip and stability on soft surfaces like sand, snow, or loose dirt. This makes the bike especially good for off-road adventures where traction is important.

With 7 speeds controlled by an easy twist shifter, the bike allows simple gear changes to tackle mild hills, though it won't be ideal for very steep or technical climbs. Mechanical disc brakes provide reliable stopping power even in wet or slippery conditions, which is a safety plus at this price. The bike weighs about 42 pounds, so it’s a bit heavy but typical for this kind of budget-friendly fat tire bike.

In essence, the Mongoose Argus ST offers good value for riders wanting a tough, no-frills mountain bike for casual trail rides and all-terrain fun, but it may not satisfy those looking for a lightweight or highly responsive ride.

The Mongoose Dolomite Fat Tire Mountain Bike is a solid choice for those looking for an affordable off-road bike, especially beginners or casual riders. Its frame is made from alloy steel, which offers good durability but adds some weight compared to lighter materials like aluminum. The bike features a rigid suspension, meaning it has no front or rear shock absorbers, so it won’t absorb bumps as well as bikes with suspension but keeps maintenance simple and costs low.

With 26-inch wheels and 4-inch wide knobby tires, it excels at handling rough trails, sand, or snow by providing extra grip and stability. The 7-speed gearing is basic but sufficient for moderate terrains, allowing riders to shift smoothly and adjust effort during climbs or flat stretches. Front and rear mechanical disc brakes provide reliable stopping power, which is a strong point for safety, especially in wet or muddy conditions. The bike’s weight is on the heavier side due to its steel frame and fat tires, which may make it less ideal for long rides or steep climbs. Assembly requires some effort and basic tools, but it comes mostly pre-assembled.

Designed for riders between 5'4" and 6' tall, it’s a versatile unisex option. The Dolomite is well suited for those wanting a rugged, easy-to-maintain mountain bike for trail riding and rough surfaces without spending much, though those needing advanced suspension or lighter weight might want to consider other models.

The Schwinn High Timber ALX is a solid choice for anyone looking for an affordable mountain bike for casual trail rides or neighborhood cruising. Its lightweight aluminum frame offers durability without being too heavy, fitting riders from about 5'4" to 6'2" comfortably. With a front suspension, the bike helps absorb bumps on rough trails, making the ride smoother. The 26-inch wheels are a standard size that balance stability and maneuverability well on various terrains.

It comes with 21 speeds controlled by twist shifters, which allow for easy gear changes as you tackle hills or flat stretches. Mechanical disc brakes provide reliable stopping power, which is especially important for safety on uneven surfaces. The wide knobby tires enhance grip and balance, helping you maintain control in different weather conditions.

This bike requires some assembly out of the box and basic tools, which might be a bit challenging if you’re not comfortable with bike maintenance. Also, while the mechanical disc brakes are effective, they need occasional adjustment compared to hydraulic brakes found on more expensive models. The Schwinn High Timber ALX offers good value with decent parts and features for beginners or casual riders wanting a dependable, entry-level mountain bike.