This 27.5-inch mountain bike is a unisex high-performance model that integrates an advanced suspension system and dual mechanical disc brakes. It has been fully tested and tuned before leaving the factory, with the disc brakes automatically adapted. You can fine-tune the brake cable tension to achieve optimal braking performance. The bike features a 27-speed split shifter system, a high-carbon steel frame, a lockout fork, a 9-speed dedicated chain, and a 9-cassette freewheel, delivering a precise and smooth riding experience. Aluminum alloy wheels paired with disc brake hubs and a 3S sealed bottom bracket ensure both durability and stability. The frame features a painted decal finish for a stylish and dynamic appearance. It's ready to go after simple assembly contact customer service anytime for assistance.