This 2005 Trek 2100 ZR9000 road bicycle is a high-quality option for riders looking for a fast and reliable ride. With a 10-speed Ultegra Shimano groupset, this bike is perfect for road cycling enthusiasts who require a responsive and smooth ride. The bike has a 50cm frame size and is designed for unisex use, making it a great option for anyone looking for a great road bike.

　　The bike is built with a lightweight aluminum and carbon fiber material, giving it both strength and durability. The bike's red color gives it a sleek and stylish look that will turn heads on any ride. The bike does not have any suspension, making it ideal for smooth roads and fast rides. This bike was made in the United States and is a great option for anyone looking for a quality road bicycle.