LEON GR 90 S šedá

The bike's suspension is designed to absorb shock and improve bike control on uneven terrain. Different types of suspension include front forks and rear shock absorbers. They can be designed with different technologies such as air, spring or oil suspension. Suspension is common on mountain bikes, while road and trekking bikes usually do not have suspension.

The headset is an important part of the bike that allows the handlebars and fork to rotate relative to the frame. The headset must be strong and work smoothly for the bike to function properly. There are several types of headsets, including integrated, semi-integrated, external and more.

The cassette is the part of the wheel that is attached to the rear hub and contains various gears or wheels that allow different speeds. The size and number of derailleurs in the cassette affects the range of speeds the wheel is capable of. Cassettes can be made from a variety of materials including steel, aluminium and titanium.

The hubs are the central part of the wheels that hold the spokes and allow the wheel to rotate on its axis. Hubs can be equipped with different features such as quick-release or fixed axle systems, and can be made of different materials such as aluminium or carbon.

The derailleur is the component on the bike that moves the chain between the sprockets on the front sprocket in a controlled manner. This allows the rider to change gear ratios and thus influence the effort required for pedalling. Shifters can be activated mechanically by cables or electronically in more advanced shifting systems.