HEAVY DUTY FRAME: Made from high-carbon steel and aluminum frame these bikes are durably made to long last offering you excellent service life. 21 SPEED TRAIL BIKE: Features a wide gear range with 3 front derailleur and 7 rear derailleur which makes changing gears very smooth so you can easily handle uphill or downhill slopes. The front suspension shock-absorbers helps you to move easily on rough and bumpy tracks. ENHANCED SAFETY: The front and rear mechanical disc brakes provide perfect braking and steady speed control on descents. The 2.125” wide knobby tires wrapped along strong and light alloy rims makes our bike reliable and dependable in wet and dry conditions. الحالة جديد النوع الدراجات الهوائية