Multi-geared, drop bar road bikes and TT (time trial) bikes.
Chain Reaction Cycles is an online retailer of bicycles and bicycle accessories. The company started in 1984 and today they sell all types of bikes for all uses. Bikes for commuting in the city, bikes for riding off road, and bikes for competitions such as triathlons.
Performance bikes are specially designed to emphasize certain features to optimize performance at specific types of riding. Often performance bikes will have specially engineered frames, different tires, and seat the rider differently then as compare to a more generalized leisure bike.
There's really no telling. There are too many different types of bikes and too many different types of riding. Most people stay above 6MPH and below 60MPH.
The two main types of dirt bikes are motocross and trail bikes. Yamaha, Kawasaki, and Honda all make these types of dirt bikes.
Felt Bicycles produces most types of bicycles. They are an American company and advertise that they manufacture mountain bikes, street bikes, racing bikes, and cyclocross bikes.
I'm having Trouble understanding your question. I'm assuming you mean "why aren't mountain bikes as good as road bikes". Just like different tools are good at different tasks, different bikes are good at different types of riding. MTBs aren't good for road riding b/c the suspension steals pedaling energy, the wide, knobbly tires roll heavier than narrow slicks. The more upright riding posture creates extra air drag. During fast descents they eventually run out of gears. OTOH road bikes aren't good for off-road riding. The narrow tires bog down on soft surfaces. It's Easy to get pinch flats. The ride is harsh.
You could check at a local bike store. There are BMX bikes, mountain bikes, road bikes. The main differences are the types of tires, suspension, and brakes.
There are many different bikes that the store Charge sells. Some of the bikes are brand new bikes. Some of the bike are used bikes, and some of them are even refurbished bikes.
There are many different types of brands for different types of exercise bikes. The best type for these bikes is the Air Lite brand which is designed to be effective.
Three kinds won't cover it, there are plenty more types of bikes: -road bikes -BMX bikes -cruisers -MTBs etc etc
Because of evolutions, and differences in requirements. Some differences came simply from people learning from their mistakes, and improving the bicycle as technology would allow it. Other came from the fact that different types of bikes are good at different types of riding, just like different types of tools are good at different types of work.
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