Bicycle frame in the context of "Bicycle"

A bicycle wheel is a wheel, most commonly a wire wheel, designed for a bicycle. A pair is often called a wheelset, especially in the context of ready built "off the shelf" performance-oriented wheels.

Bicycle wheels are typically designed to fit into the frame and fork via dropouts, and hold bicycle tires.

A touring bicycle is a bicycle designed or modified to handle bicycle touring. To make the bikes sufficiently robust, comfortable and capable of carrying heavy loads, special features may include a long wheelbase (for ride comfort and to avoid pedal-to-luggage conflicts), frame materials that favor flexibility over rigidity (for ride comfort—though frame flexing can eventually lead to metal fatigue and frame failure, so newer frames are rigid), heavy duty wheels (for load capacity), and multiple mounting points (for luggage racks, fenders, and bottle cages).

A unicycle, also monocycle is a vehicle that touches the ground with only one wheel. The most common variation has a frame with a saddle, and has a pedal-driven direct-drive. A two speed hub is commercially available for faster unicycling. Unicycling is practiced professionally in circuses, by street performers, in festivals, and as a hobby. Unicycles have also been used to create new sports such as unicycle basketball and unicycle hockey. In recent years, unicycles have also been used in mountain unicycling, an activity similar to mountain biking or trials.

Bikepacking is how a bicycle is packed for bicycle touring, and also refers to the adventure sport of long-distance unsupported cycle races. As with backpacking, lightweight packing is a popular topic within bicycle packing. Any kind of bicycle can be used for bikepacking, and specialized touring bicycles often have attachment points from the factory such as low riders and luggage carriers, but most types of bicycles can be equipped with a frame bag (attached inside the frame's main triangle), saddle bag (attached to the seatpost), top tube bag and handlebar bag.

Pedelec (from pedal electric cycle), or EPAC (electrically power-assisted cycle), or EAPC, is the term for electric bicycles or e-bikes where the electric motor is controlled by the rider's pedalling. In many countries this term describes the majority or all electric bicycles legally in use, but is not itself a legal description and as such seldom used. Many jurisdictions classify pedelec-type bicycles almost the same as unmotorized bicycles, with few or no legal restrictions, rather than as mopeds, where the riders are subject to the regulations of such motor vehicles, e.g. having a license, a vehicle registration, insurance, wearing a helmet, or age-restrictions.

The crankset (in the US) or chainset (in the UK) is the component of a bicycle drivetrain that converts the reciprocating motion of the rider's legs into rotational motion used to drive the chain or belt, which in turn drives the rear wheel. It consists of one or more sprockets, also called chainringsor chainwheels, attached to the cranks, also called arms or crankarms, to which the pedals attach. It is connected to the rider by the pedals, to the bicycle frame by the bottom bracket, and to the rear sprocket, cassette, or freewheel via the chain.

The bottom bracket on a bicycle connects the crankset (chainset) to the bicycle and allows the crankset to rotate freely. It contains a spindle to which the crankset attaches, and the bearings that allow the spindle and crankset to rotate. The chainrings and pedals attach to the cranks. Bottom bracket bearings fit inside the bottom bracket shell, which connects the seat tube, down tube and chain stays as part of the bicycle frame.

The term "bracket" refers to the tube fittings that are used to hold frame tubes together in lugged steel frames which also form the shell that contains the spindle and bearings; the term is now used for all frames, bracketed or not.