A Rear wheel 20 x 2.1 Coaster wheel is a specific type of bicycle wheel that is designed to fit a bike with 20-inch wheels and has a coaster brake mechanism. This type of wheel is commonly used on children's bikes, BMX bikes, and some beach cruisers.
Here are some key features of a Rear wheel 20 x 2.1 Coaster wheel:
- Size: The wheel is 20 inches in diameter and 2.1 inches in width. This size is standard for many children's bikes and some BMX bikes.
- Coaster brake: The wheel has a coaster brake mechanism, which is a type of brake that is activated by pedaling backward. This provides a simple and reliable way to brake while riding.
- Rim: The rim of the wheel is typically made of aluminum or steel and is designed to be durable and withstand regular use.
- Spokes: The wheel has a set of spokes that connect the rim to the hub. The number and type of spokes can vary depending on the specific wheel and its intended use.
- Hub: The hub is the center part of the wheel, which contains the bearings and axle. The hub on a coaster wheel is designed to accommodate the coaster brake mechanism.
- Tire: The wheel is designed to fit a 20-inch tire, which can vary in width depending on the specific bike and intended use.
Overall, a Rear wheel 20 x 2.1 Coaster wheel is a specific type of bike wheel that is designed for use with a coaster brake mechanism. It is commonly used on children's bikes, BMX bikes, and some beach cruisers, providing a simple and reliable braking system while riding.