PostJoyS9 Electric Mountain Bike is designed exclusively for off-road adventures and outdoor enthusiasts who crave power, performance, and comfort on rugged mountain trails. - Brand: PostJoy - Model Name: S9 - Bike Type: Electric Mountain Bike - Frame Material: Alloy Steel, sturdy and durable for rough off-road terrain - Motor: 750W Rated Motor, providing strong torque for steep slopes and complex trails - Battery: 48V 20Ah, supporting long-distance off-road riding - Max Range: 50 Miles Per Charge - Top Speed: 20MPH - Suspension Type: Only Front, ensuring smooth riding on bumpy trails - Tire Type: Pneumatic Knobby Tires, offering strong grip for off-road conditions - Wheel Size: 16" x 4" - Brake Type: Disc Brakes & Electronic Brake, providing reliable safety protection - Brakes: Front & Rear - Color: Black - Max Load: 385lbs - e-Bike Class: 2 -Suit for ages 16-55. - Package Weight: 63.8 lbs - Product Weight: 52 lbs Return & Exchange: 30 days (Please keep the original box for one month) Warranty: 1 year If you have any problems with our products, please contact us. We will provide technical support, replacement parts, returns and exchanges, etc.