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Bicycle pumps are used to inflate tires. Some pumps have a gauge that measures the pressure inside the tire, while others do not. Bike pumps are used by cyclists to inflate tires before putting them on the bike and riding them again. They are also used in sports where people use bikes such as BMX and mountain biking.
A bike pump is able to inflate a tire faster than other methods such as mouth-inflating or using a manual air compressor. While a pump can be used to inflate the entire tube, it can also be used to use pressure for only inflating the inner tube as well.
There are different kinds of bike pumps. Some of them are made specifically for BMX bikes, while others are made for mountain bikes. Most bike pumps have a fitting that is compatible with both mountain and BMX tires.