10 Best Mountain Bikes 2025 in the United States

The Mongoose Argus Trail Fat Tire Mountain Bike is designed for adults around 5'10" to 6'1" tall who enjoy riding on a variety of surfaces, including sand and snow. Its 26-inch wheels combined with wide 4-inch knobby fat tires provide excellent grip and stability on rough or loose terrain, making it a solid choice for adventurous trail rides. The frame is made from aluminum, which keeps the bike relatively light at 30 pounds while offering good durability.

Being a hardtail bike with a rigid suspension means it doesn't have shock absorbers, so it works best on less rocky trails and smoother surfaces but may feel less comfortable on very rough terrain. The 16-speed gearing with 2x8 shifters allows for smooth gear changes, helping riders handle hills and different speeds efficiently. Mechanical disc brakes provide reliable stopping power, even in wet or slippery conditions, which is important for safety on challenging trails.

One downside is the fixed 26-inch wheel size, which is smaller than some modern mountain bikes that use 27.5 or 29 inches for better rollover on obstacles, so it might feel a bit less smooth on bigger bumps. Also, since the suspension is rigid, it might not absorb shocks as well as bikes with front suspension, affecting comfort on rough paths. This bike is a good choice for intermediate riders who want a sturdy, all-terrain mountain bike with fat tires for extra traction, especially if they plan to ride on sand, snow, or loose surfaces and prefer a straightforward, low-maintenance setup.

The Funhang Electric Mountain Bike features a powerful 500W motor with a peak output of 1000W, enabling it to handle hills and rough terrain at speeds up to 21.7 mph. It rides on 26-inch aluminum wheels that balance maneuverability with stability. The carbon steel frame offers durability, although it is heavier than aluminum or carbon fiber frames typically found on higher-end models. Suspension is limited to a lockable front fork, which helps absorb bumps, though it may not provide the same comfort on very rough trails as full suspension bikes do. Braking is handled by dual disc brakes, delivering reliable stopping power in various weather conditions, an important safety feature. The 21-speed gearing system allows for a wide range of pedaling options to find a comfortable cadence on both climbs and flat terrain.

Adjustability is provided through an adjustable stem and seat, accommodating riders between 5'3" and 6'1". The bike is powered by a removable 48V 374.4Wh lithium-ion battery that offers a solid range of up to 50 miles with pedal assist and 25-30 miles in full electric mode. Charging time ranges from 4 to 5 hours, and the battery's IPX5 rating ensures it can handle some wet conditions. Additional features such as mudguards (fenders), a bright headlight, and a clear LCD display enhance comfort and safety during rides. The bike comes partially assembled and includes helpful instructions.

This electric mountain bike is well suited for beginner to intermediate riders seeking a versatile e-bike for commuting, trail riding, and light off-road adventures. It may feel somewhat heavy due to the steel frame and lacks rear suspension, so those interested in aggressive off-roading might want to explore other models. A 12-month warranty and responsive customer support provide added reassurance for new e-bike users.