A drive unit reliably and stably attached to a bracket, even if the bracket has high stiffness, includes a housing including first and second suspension bosses located between first and second side plates of the bracket in a left-right direction of a bicycle. A first bolt is fastened to the first suspension boss and inserted from an outside in the left-right direction of the bicycle into a hole in the first side plate. A cylindrical member is fitted into an insertion hole in the second suspension boss that is open toward the second side plate. The cylindrical member is slidable in the left-right direction of the bicycle and includes a thread groove located on an inner periphery thereof engaging a thread located on an outer periphery of a second bolt that is inserted from the outside in the left-right direction of the bicycle into a hole in the second side plate.

A bicycle hydraulic operating device comprises a base member, a piston, and a plug member. The base member is configured to be mounted to a bicycle handlebar and has a cylinder bore and a through-hole. The cylinder bore extends in a first direction. The through-hole includes an outer opening on an outer surface of the base member and extends from the cylinder bore. The piston is configured to be movably disposed within the cylinder bore. The plug member is configured to plug up the through-hole and has an inside part disposed inside the outer opening. The inside part has a maximum outer diameter larger than an inner diameter of the outer opening.

A bicycle hydraulic operating device comprises a base member, a piston, and a plug member. The base member is configured to be mounted to a bicycle handlebar and has a cylinder bore and a through-hole. The cylinder bore extends in a first direction. The through-hole includes an outer opening on an outer surface of the base member and extends from the cylinder bore. The piston is configured to be movably disposed within the cylinder bore. The plug member is configured to plug up the through-hole and has an inside part disposed inside the outer opening. The inside part has a maximum outer diameter larger than an inner diameter of the outer opening.

A bicycle image capturing device is provided that reduces annoying operations for changing an operation state. The bicycle image capturing device includes a controller. The controller includes a reception unit and an electronic control unit. The reception unit is configured to obtain information related to a component of a bicycle. The bicycle component is operable in at least a first state and a second state that differs from the first state. The electronic control unit is configured to control a first image capturing unit based on the information obtained by the reception unit.

A rear derailleur is provided for mounting to a bicycle. An upper body operationally engages the rear derailleur to the bicycle, and a lower body operationally engages a chain cage engaging a chain of the bicycle. Upper and lower link arms are pivotally connected to the upper and lower bodies. The upper link arm includes an actuating arm extending downwardly from the upper link arm through an aperture of the lower link arm. A cable for actuating the derailleur operationally engages the actuating arm for moving the chain cage relative to the bicycle.

A slide component comprises a base member and a plated layer. The base member is made of a titanium alloy including beta phase of titanium. The base member includes a surface having a plurality of recesses. The plated layer is provided on the surface of the base member.

A drive arrangement for a bicycle may include a plurality of sprockets arranged at a rear wheel of the bicycle. The sprockets may be particularly arranged to have a spacing that facilitates the configuration of an increasing number of sprockets in the plurality of sprockets. A singular front sprocket or chainring may be used to drive the rear plurality of sprockets. A particularly configured tool may be used to configure the drive arrangement.

A carbon fiber toothed structure has a body. The body is circular and has a toothed segment and at least one carbon fiber cloth. The toothed segment is formed on an outer periphery of the body. The at least one carbon fiber cloth is deposited on a front side and a rear side of the body from a center to the outer periphery of the body to cover the toothed segment. The body is made by stacking multiple circular carbon fiber cloths of different diameters with each other. Some of the carbon fiber cloths deposited in the body have smaller diameters than those of the others of the carbon fiber cloths to enable the center of the body being thicker than the outer periphery of the body. The toothed segment has two guiding inclined planes respectively deposited on the front side and the rear side of the body.

A rocker for a bicycle gear that has an inner plate, an outer plate, a pair of pins integral with said inner and outer plates and a pair of toothed wheels arranged between them. Each toothed wheels is rotatably mounted on a respective pin. At least one pin is inserted in non-threaded through holes formed in the inner and outer plates and is defined by a screw with an outer threading and a female screw with an inner threading engaged with the outer threading.

A rocker for a bicycle gear that has an inner plate, an outer plate, a pair of pins integral with said inner and outer plates and a pair of toothed wheels arranged between them. Each toothed wheels is rotatably mounted on a respective pin. At least one pin is inserted in non-threaded through holes formed in the inner and outer plates and is defined by a screw with an outer threading and a female screw with an inner threading engaged with the outer threading.