Shock Absorbing Ride: SmiloSprk Mountain Bike equipped with a durable high carbon steel frame with suspension fork for optimal shock absorption, ensuring a smooth ride on rough terrains. Adopted hidden cable design and multi-layer electrostatic coating process, creating a sleek and beautiful appearance while enhancing durability. 21-Speed Shifting & Disc Brakes: SmiloSprk adult mountain bike features a 21-speed twist shifting system, for smooth and effortless gear changes, paired with precise dual disc brakes for reliable stopping power, adapting to any terrain. All-Terrain Tires: SmiloSprk mountain bicycle is equipped with 27.5x2.35 All-Terrain Tires, offering superior grip and stability, perfect for city streets, dirt paths, mountain trails, and more. Conquer various terrains with ease, meeting all riding needs. Perfect for Every Journey: Ideal for off-road riding, outdoor exploration, competitive racing, and fitness rides perfect for outdoor enthusiasts and adventurers! Easy Assembly: 85% pre-assembled, comes with an installation manual and video.