21-Speed MTB Carbon Steel Frame Adult Bike

Premium Carbon Steel Frame
– High-tensile carbon steel construction ensures durability and shock absorption for rugged terrains. Reinforced welding points enhance structural integrity.
Advanced Disc Brake System
– Dual mechanical disc brakes deliver instant stopping power in all weather conditions, ensuring rider safety on steep descents.
Adjustable Wheel Sizes
– Compatible with 26", 27.5", or 29" wheels to suit rider height and terrain preferences. Customize for urban commuting or mountain trails.
Steel Fork with Vibration Damping
– Rigid yet responsive steel fork minimizes hand fatigue on long rides while maintaining precise steering control.
21-Speed Shimano Drivetrain
– Smooth gear transitions with a wide range for climbing hills or accelerating on flat roads. Ideal for fitness training or adventure touring.
Sport-Design Tires
– Knobby tread pattern grips loose gravel and mud. Reinforced sidewalls prevent punctures during off-road cycling.
Ergonomic Racing Saddle
– Breathable padding and contoured shape reduce pressure for extended rides. Quick-release seat clamp for easy height adjustment.
Tool-Free Assembly
– Pre-assembled 85% for effortless setup. Includes detailed manual for remaining adjustments.
Versatile Use
– Perfect for daily commuting, trail exploration, or weekend fitness routines. Supports riders up to 300 lbs.
Bulk Order Advantage
– Wholesale pricing available for resellers or group purchases. Global shipping with guaranteed lowest rates.