Freestyle motocross of the riders wrist or lower arm to stop the rider from rotating during the flips, but letting the bike continue to move. Bikes have aftermarket performance pipes that give more power. The bike must have very strong suspension and very high-quality tires. Freestyle motocross Freestyle motocross (also known as FMX) is a variation on the sport of motocross in which motorcycle riders attempt to impress judges with jumps and stunts. The two main types of freestyle events are: Notable freestyle motocross events include Red Bull X-Fighters, NIGHT of the JUMPs, the X Games, Gravity Games, Big-X, Moto-X Freestyle National
Bicycle and motorcycle geometry Bicycle and motorcycle geometry Bicycle and motorcycle geometry is the collection of key measurements (lengths and angles) that define a particular bike configuration. Primary among these are wheelbase, steering axis angle, fork offset, and trail. These parameters have a major influence on how a bike handles. Wheelbase is the "horizontal" distance between the centers (or the ground contact points) of the front and rear wheels. Wheelbase is a function of rear frame length, steering axis angle, and fork offset. It is similar to the term wheelbase used for automobiles and trains. Wheelbase has a major influence on the longitudinal stability