Rocky Mountain Bike,

Frame: Lightweight aluminum or 1.0 thickness steel, depending on the model. Gears: 21-speed drivetrain (7x3 configuration). Braking System: Mechanical disc brakes for both front and rear wheels. Tires: Knobby tires for maximum traction on rough surfaces. Additional Features: Includes a front suspension fork, high-elastic foam cushion saddle, water bottle with holder, and front/rear mudguards.