A bicycle derailleur comprises a base member adapted to be mounted to a bicycle, a movable member movably coupled to the base member, and a chain guide coupled to the movable member. The chain guide is coupled for rotation around a rotational axis (X), and a biasing element biases the chain guide in a selected rotational direction. A resistance applying unit applies a resistance to rotational movement of the chain guide in a direction opposite the selected rotational direction, and an adjusting unit adjusts an amount of resistance applied by the resistance applying unit.

A bicycle derailleur comprises a base member adapted to be mounted to a bicycle, a movable member movably coupled to the base member, and a chain guide coupled to the movable member. The chain guide is coupled for rotation around a rotational axis (X), and a biasing element biases the chain guide in a selected rotational direction. A resistance applying unit applies a resistance to rotational movement of the chain guide in a direction opposite the selected rotational direction, and an adjusting unit adjusts an amount of resistance applied by the resistance applying unit.

Bicycle dropouts to secure a rear axle of a bicycle include a dropout with locking channels formed over a portion of its face, and a corresponding locking plate with complementary channels formed over one face. The locking plate surrounds the rear axle and the locking and complementary channels engage to prevent the rear axle from moving in the dropout. When the locking plate is loosened so that the channels can disengage, the rear axle position can be adjusted forward and backward to loosen or tighten the chain.

A bicycle chain tensioner provides precise adjustment and alignment of a rear axle, and shields an adjusting screw. A tensioner housing includes an axle hole and a slide pressing against an axle flange, the slide positioned by the adjusting screw. The tensioner housing is moved forward and rearward by the adjusting screw to adjust the axle position. The tensioner holds the axle in the desired position while axle nuts are tightened to prevent the axle moving during tightening. An indicator on the slide points to a scale on the housing to match right and left tensioner positions.

A bicycle chain tensioner provides precise adjustment and alignment of a rear axle, and shields an adjusting screw. A tensioner housing includes an axle hole and a slide pressing against an axle flange, the slide positioned by the adjusting screw. The tensioner housing is moved forward and rearward by the adjusting screw to adjust the axle position. The tensioner holds the axle in the desired position while axle nuts are tightened to prevent the axle moving during tightening. An indicator on the slide points to a scale on the housing to match right and left tensioner positions.

A motorbike swingarm cover incudes a protective cover that covers at least a portion of the outer face of the motorbike swingarm. Said cover is secured to the motorbike swingarm through a cable lashing in the frontward portion of the cover, and a bracketed attachment in the rearward portion of the cover. Said bracketed attachment will secure onto both the cover and onto the motorbike swingarm by way of an included mounting feature on the swingarm.

A bicycle rear derailleur includes a movable member and a chain guide assembly rotatably connected to the movable member. The bicycle rear derailleur also includes a pivot member non-rotatably coupled to the chain guide assembly and having an outer annular surface, a biasing device configured to bias the chain guide assembly in a first rotational direction relative to the movable member, and a damper device disposed between the chain guide assembly and the movable member. The damper device is operable to apply a damping force to the chain guide assembly when the chain guide assembly rotates in a second rotational direction relative to the movable member. The damper device includes a friction device that is radially inner relative to the biasing device. The friction device includes a friction member having at least one friction surface biased against and in frictional engagement with the pivot member.

A bicycle rear derailleur includes a movable member and a chain guide assembly rotatably connected to the movable member. The bicycle rear derailleur also includes a pivot member non-rotatably coupled to the chain guide assembly and having an outer annular surface, a biasing device configured to bias the chain guide assembly in a first rotational direction relative to the movable member, and a damper device disposed between the chain guide assembly and the movable member. The damper device is operable to apply a damping force to the chain guide assembly when the chain guide assembly rotates in a second rotational direction relative to the movable member. The damper device includes a friction device that is radially inner relative to the biasing device. The friction device includes a friction member having at least one friction surface biased against and in frictional engagement with the pivot member.

A motorcycle with a swing arm element pivotably coupled to a holding element of the motorcycle via a rotary bearing is provided with a tensioning element. The motorcycle also includes a pulling member which engages two gear elements which are each spaced from the rotary bearing in a torque-transmitting manner. The first gear element is rotatably mounted separately from the swing arm element, and the second gear element is rotatably mounted on the swing arm element. The tensioning device for tensioning the pulling member is mounted rotatably and/or in an axially displaceable manner relative to the two gear elements on the swing arm element or on a frame of the motorcycle. The tensioning device includes at least two levers pivotable relative to one another, and a tensioning element which biases the levers against the pulling member to maintain consistent tension in the pulling member.

A motorcycle with a swing arm element pivotably coupled to a holding element of the motorcycle via a rotary bearing is provided with a tensioning element. The motorcycle also includes a pulling member which engages two gear elements which are each spaced from the rotary bearing in a torque-transmitting manner. The first gear element is rotatably mounted separately from the swing arm element, and the second gear element is rotatably mounted on the swing arm element. The tensioning device for tensioning the pulling member is mounted rotatably and/or in an axially displaceable manner relative to the two gear elements on the swing arm element or on a frame of the motorcycle. The tensioning device includes at least two levers pivotable relative to one another, and a tensioning element which biases the levers against the pulling member to maintain consistent tension in the pulling member.