This 27-speed mountain bike is designed for all-terrain riding. Its high-carbon steel frame and spring-loaded suspension fork effectively filter out bumps and adapt to a variety of challenging road conditions. It features reliable dual mechanical disc brakes and disc brake hubs. Factory-calibrated shifting and braking are available, and manual fine-tuning of the brake cable tension is supported for safety. The drivetrain comprises a sealed 3S shaft, 9 tower wheel, integrated shifters, and a 110-speed chain, ensuring precise and smooth shifting. The bike is equipped with aluminum alloy wheels and features a unisex design suitable for both men and women. Installation is simple, if needed, please contact customer service.