AVASTA AV300 Adult Mountain Bike, 21-Speed, Aluminum Frame, Dual Disc Brakes
Product description
For adult riders looking for a mountain bike with multiple gears, front suspension, and disc brakes, the AVASTA AV300 brings those features together in an aluminum-frame design. It is listed with either 26-inch or 27.5-inch all-terrain tires, so the wheel-size choice is part of the buying decision.
Its 21-speed Shimano drivetrain gives riders a range of gears for changing inclines, while the front suspension is intended to add comfort over varied surfaces. Buyer feedback is positive about assembly and appearance overall, but reports on shifting and brake adjustment are mixed.

Tech specs


- Type: Adult mountain bike
- Frame and rims: Aluminum alloy
- Wheel options: 26-inch or 27.5-inch, KENDA tires, 1.95 inches wide
- Gearing: 21-speed Shimano derailleur system
- Brakes: Front and rear disc brakes
- Suspension: Front fork
- Weight: 33 lbs (26-inch), 36.4 lbs (27.5-inch)
- Color: Green
- Included: Bell, kickstand, quick start guide, reflectors, and tool kit

The aluminum frame and rims keep the design focused on lower weight compared with a steel-frame approach, while the dual disc brakes provide braking at both wheels. The half-hidden cable routing gives the bike a tidier look, though the listing does not provide details such as frame sizing or a rider-height range. The two wheel configurations also have different listed weights, which may matter when comparing the available versions.
Requirements



The bike is described as 75% pre-assembled, with an installation video and quick start guide available to help with setup. A tool kit is included. That still means some assembly is needed before riding, buyers who prefer a bike ready to ride without setup should factor that in. Customers often describe assembly as straightforward, but feedback about adjustment is not uniform. Some report issues with the rear derailleur or front brake, so a careful setup matters before taking the bike onto a trail.
Who it’s for

It suits you if you want an adult mountain bike for neighborhood rides and occasional use on trails or gravel, and you value having a choice of wheel size, a 21-speed drivetrain, and front suspension. For example, a rider could use the lower gears on an incline and shift as the route levels out. The included kickstand and bell also fit everyday riding needs.
The customer feedback describes a bike that many find appealing in appearance and enjoyable to ride, with positive comments about assembly. However, experiences with functionality and durability vary, some buyers mention shifting or brake adjustments, while others say the bike operates smoothly. These are buyer impressions rather than a guarantee of how an individual bike will perform.
It might not be a great match if you want a setup with no assembly or expect to avoid any brake or derailleur adjustments. Compared with a simpler single-speed bike, the AV300 offers more gear choices and front suspension, riders seeking a more specialized setup for demanding trail use should compare the components and fit they need before choosing.
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