26" Mountain Bike Adult 21-Speed Bikes with Double Disc Brake

Non-electric model Features: PROFESSIONAL 21-SPEED SHIFTING SYSTEM: The 21-speed transmission system with quick, precise gear changes makes this mountain bike can easier to adapt to different terrain. Made of non-slip and explosion-proof materials, our tires can easily conquer gravel paths, dirt paths, and rocky roads. POWERFUL SHOCK ABSORBING AND BRAKING: The shock-absorbing cushion is matched with a thickened shock-absorbing front fork that is fitted with a double shock absorption effect. Mechanical dual disc brakes have a strong braking force and can provide a more sensitive braking response than other brakes. COMFORTABLE RIDING EXPERIENCE: Lightweight aluminum alloy wheels are matched with specially designed spokes that can better assist reduce wind resistance during riding. The lock-out suspension fork handles bumps and dips for a smoother-feeling ride. DURABILITY & ADJUSTABILITY: Made of high-carbon steel frame, this adult bikes is strong and will not deform. This mountain b