BMX Bike

BMX bikes have a rigid framework with forks, high-rise handlebars, and cassette gears. The construction of the bikes is robust and durable. BMX is an abbreviation for Bicycle Motocross. These bicycles are available in the dirt, park, race, street, and flatland models. The dirt BMX bikes are sturdier and have a heavy frame. Usually, the bikes have a bigger wheel with a diameter of 16 to 26 inches, where 20 inches being commonly used. The BMX bikes usually have 18 to 48 spokes aiding their high velocity. 

Parts of BMX bikes

The BMX bike has its specific construction comprising various parts. Each of the BMX bike’s section plays a significant role in the performance. 

• Frames - BMX bikes are manufactured with aluminium frames due to their lighter weight. The aluminium frames are used to mould in larger diameter tubes. They have a more significant welding surface area that increases the bike’s speed. The frames in freestyle BMX bikes are manufactured from steel. Steel is used as a more cumbersome, cheaper, and durable resource for manufacturing. The horizontal dropouts are aided in single-speed bicycle to maintain their chain tension and friction. 
• Brakes - Brakes generally come with arms that have two springs that can be adjusted on each arm to control the tension and distance of the pad from the edge. Once you understand it, it is much easier to adjust and maintain the brakes. The racers prefer only one brake to yield more speed. The rear brakes have a U-style format and are powerful enough to stop the bicycle with a single press. The bike’s cup bearing is placed below the stem, which allows a 360 degree spun without getting tangled into the cables. The brakes are useful in performing turns and rounds during a match.
• Wheels and tyres -The wheels and tyres are the most basic yet essential part of a racing bike. The bikes usually have 20 inches diameter and have spokes inside the rim to decrease any friction. There is a 36h alloy sealed bearing hub with a steel axle attached to a double-wall rim. The knobbly tyres provide space for proper handling (grip) to the participants. The tyres have a thinner rear which helps to achieve higher speed. The BMX bikes have both their stunt pegs (front and back) for performing tricks and completing a higher degree of velocity. 
• Drivetrain - The BMX bikes drivetrain provide appropriate powering for the rider to pedal the bike. It includes the pedals, cranks, chainrings and fork. 
• Bars and stem - The bars used in BMX bikes are either manufactured with a piece or four-piece steel bars. The two-piece steel bars are majorly used in constructing a BMX bike. The higher-end bikes use Chromoly steel, which is high in tensile and a cheaper alternative. The width of the handlebars should be 73.7cm (29 inches). They could rise to 30.5cm (12 inches). 

Types of BMX Bikes used in racing

• Racing Bikes - The racing bikes are the original bikes used for the first time in the 1960s. The racing bikes are more rigid and sturdy to use. The bikes have light-weighted thin tiers with knobby treads. These bikes can be ride with maximum speed and velocity. The bike also provides more traction and maintains uniform friction with the racing track. The brakes fitted in the bike are mechanically supported with a linear pull. 
• Freestyle Bikes - Freestyle bikes are majorly used to perform stunts and tricks. The manufactured bikes are usually heavier than the jumpers. The freestyle bikes are acquired with both front and rear brakes. The wheels are also provided with more spokes which aid in smoother biking. The handlebars can rotate up to 360 degrees expanding the level of stunts and tricks performed by the athletes. The tires have a wider circumference with 20 x 2.125 inches incorporated with suitable pavements.  
• Jumping Bikes - The jumping bikes are lighter to use due to the presence of sturdier spokes and more robust treads. The bikes have 36 spokes. The bikes are compatible to be used for dirt track riding. The tyres are manufactured with high-grade rubber to provide maximum traction.